Accutome a-scan plus User Manual
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Accutome a-scan plus User Manual

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A-Scan Plus
User's Guide
24-4016 Rev B

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  • Page 1 A-Scan Plus User’s Guide 24-4016 Rev B...
  • Page 2 CAUTION: Changes or modifications not expressly approved by Accutome Ultrasound, Inc. could void the FCC compliance and negate your authority to operate the product. Authorized Representative in Europe (for regulatory affairs only): Emergo Europe P.O.

  • Page 3: Table Of Contents

    Contents Introduction - - - - - - - - - - - - - - - - - 1 Accutome A-Scan Plus Overview - - - - - - - - - - 1 Features - - - - - - - - - - - - - - - - - - - - 2...
  • Page 4 Overview - - - - - - - - - - - - - - - - - - - 51 Accutome A-Scan Plus Buttons - - - - - - - - - - 52 Dedicated Buttons - - - - - - - - - - - - - - - 52...
  • Page 5 Using the Footswitch - - - - - - - - - - - - - - 64 Preferences - - - - - - - - - - - - - - - - 65 Setting Up the Accutomre A-Scan Plus - - - - - - 65 How to Access Preferences...
  • Page 6 Accutome A-Scan Plus User’s Guide Assigning a Velocity to the New Lens Material - - 72 Adding the New Eye Type Information - - - - - 73 Eye Type Screen Menu Selections - - - - - - - - 80...
  • Page 7 Contents Eye Type Materials and Velocities - - - - - - - Setting the Eye Type- - - - - - - - - - - - - Probe Application Methods - - - - - - - - - - - -160 Immersion - - - - - - - - - - - - - - - - - Contact - - - - - - - - - - - - - - - - - - Capture Modes...
  • Page 8 Accutome A-Scan Plus User’s Guide Customizing Eye Types - - - - - - - - - - Overview - - - - - - - - - - - - - - - - - - -187 Patient Customization - - - - - - - - - - - -...
  • Page 9 Contents Clinical History Method - - - - - - - - - - - - Clinical History Fields - - - - - - - - - - - Contact Lens Method - - - - - - - - - - - - Shammas Clinical Method- - - - - - - - - - Calculation Results - - - - - - - - - - - - -...
  • Page 10 Accutome A-Scan Plus User’s Guide Storing and Recalling Records - - - - - - - Overview - - - - - - - - - - - - - - - - - - -241 How to Store a Record...
  • Page 11 Accutome Ultrasonic Probe Kit (PN 24-4001) - - - - - - 25 Figure 10 Accutome Probe - - - - - - - - - - - - - - - - - - - - - - - - - - 26 Figure 11...
  • Page 12 List of Figures Figure 32 Accutome A-Scan Plus Screen Hierarchy - - - - - - - - - 58 Figure 33 Preferences Button - - - - - - - - - - - - - - - - - - - - - - - - 66...
  • Page 13 Accutome A-Scan Plus User’s Guide Figure 71 Selecting the Delete Confirm Value - - - - - - - - - - - - 108 Figure 72 New Delete Confirm Entered - - - - - - - - - - - - - - - - - 109...
  • Page 14 List of Figures Figure 110 Measure Screen Displaying Current Settings - - - - - 152 Figure 111 Eye Type Selected - - - - - - - - - - - - - - - - - - - - - - - - 157 Figure 112 Eye Type Active - - - - - - - - - - - - - - - - - - - - - - - - - - 158 Figure 113 Eye Type Changed - - - - - - - - - - - - - - - - - - - - - - - 159 Figure 114 Measurement Selected - - - - - - - - - - - - - - - - - - - - - 164...
  • Page 15 Accutome A-Scan Plus User’s Guide Figure 145 IOL Groups Screen - - - - - - - - - - - - - - - - - - - - - - - 217 Figure 146 Entering the IOL Group Name - - - - - - - - - - - - - - - - 218...
  • Page 16 List of Figures...
  • Page 17 Non-Autoscanning Mode - - - - - - - - - - - - - - - - - - - - 268 Table 12 Accutome Replacement Parts - - - - - - - - - - - - - - - - 273...
  • Page 18 List of Tables...

  • Page 19: Introduction

    Introduction Accutome The Accutome A-Scan Plus pictured below has all the A-Scan Plus features that make it easy to obtain extreme accuracy Overview and improved patient outcomes. Figure 1 Accutome A-Scan Plus...

  • Page 20: Features

    Accutome A-Scan Plus User’s Guide Features The Accutome A-scan Plus is designed for easy access to all screens and functions. The advanced User Input Knob provides unsurpassed ease of use and the straightforward Graphical User Interface guides you through every operation.

  • Page 21: Iol Calculations

    Broadband probe features fixation light and multiple mounting options IOL Calculations The Accutome A-Scan Plus is also a leader in IOL Calculations and provides the following: Modern formulas including Hoffer Q, Holladay, SRK/T, and Haigis Compare results of all formulas simultaneously...

  • Page 22: Components

    Accutome A-Scan Plus User’s Guide Components The components that are standard with each Accutome instrument are: Ultrasonic probe Power Supply Keyboard Footswitch Optional Components There are also several optional components which further simplify the use of the Accutome A-Scan: External Printer...

  • Page 23: About This Manual

    Safety Summarizes safety precautions, warnings, symbols and terms. Section 3 Getting Started Provides assembly instructions, overview of Accutome A-Scan Plus basic operation. Section 4 How to Use the Describes the Accutome interface and how to Buttons and use all the buttons and Screens screens.
  • Page 24 Warranty and Describes Accutome Repairs A-Scan warranty information and repair procedures. Having read this manual you will be able to assemble the Accutome A-Scan, take measurements, calculate IOL power, customize IOL constants and eye types, and print and save Patient records.

  • Page 25: Safety

    Safety Precautions of a general nature Federal law restricts this device to sale by or on the order of a physician. Safety Issues to Consider When Using the Accutome A- Scan Plus The Accutome A-Scan Plus is non-invasive. The ultrasonic biometry probe touches the surface of the anesthetized cornea during the scanning process.

  • Page 26: Symbol Definitions For The Accutome

    Accutome A-Scan Plus User’s Guide Symbol Statements, graphics and symbols listed below are used Definitions for on components of the Accutome A-Scan Plus. the Accutome Descriptions and meanings are listed to the right of the symbols. "Attention! Consult instruction manual."...

  • Page 27: Safety Precautions

    Safety Safety Precautions Power connector 12V DC Safety Precau- There are several areas in the use of the Accutome tions A-Scan that require special attention, as they may pose a safety threat. Sterilization Sterilization issues are confined to the A-Scan probe that comes in contact with the patient’s eye.

  • Page 28: Disinfection And Cleaning

    WARNING! DO NOT AUTOCLAVE! Disinfection issues are confined to the Accutome probe that comes in contact with the patient’s eye. In order to prevent the transmission of disease, refer to the OSHA and CDC guidelines for proper control of disinfection.
  • Page 29 Safety Safety Precautions CAUTION: General indications for use of the Accutome probe include on external structurally intact areas of the eye globe and orbit areas only.

  • Page 30: Electrical Hazard And Safety

    Use only hospital-grade power cords and the connectors supplied with the Accutome A-Scan Plus. Also, be sure the power cords and connectors are in good condition. To comply with IEC 601-1, the device should be connected to earth via the ground terminal located next to the DC input connector.

  • Page 31: Getting Started

    Getting Started Assembling The Accutome A-Scan Plus is designed to be used in the Accutome multiple environments and can be rested on a surface, A-Scan Plus mounted on a wall, or mounted on a pedestal, or camera mount. The instrument requires little assembly.

  • Page 32: Probe

    Accutome A-Scan Plus User’s Guide Figure 2 Accutome A-Scan Plus Components Probe The probe provided with the Accutome A-Scan is an essential component. No other probes should be used with the instrument. Printer The Accutome A-Scan can be configured with either a Laser Jet or Ink Jet printer.

  • Page 33: Serial Link Port

    The keyboard is not required for operation but provides convenience for entering alphanumeric data and performing shortcut operations. Power Supply The power supply provided with the Accutome A-Scan Plus is a small, compact external unit with worldwide power input capabilities.

  • Page 34: Placing The Accutome A-Scan Plus

    Quick-Close Kickstand The quick-close kickstand provided with the Accutome A-Scan Plus provides an easy, stable base for the instrument. To open the kickstand pull the kickstand away from the bottom of the instrument. When opening or closing the kickstand it is best to exert a small amount of outward pressure on the inner sides of the kickstand.

  • Page 35: Figure 4 Open Kickstand

    Getting Started Assembling the Accutome A-Scan Plus Figure 4 Open Kickstand...

  • Page 36: Mounting

    Accutome A-Scan Plus User’s Guide Mounting The Accutome A-Scan Plus is designed to be mounted with many types of hardware. The back of the Accutome has five threaded holes. Four of the holes are AMPS- NEC compatible and will accept any compatible mounting.

  • Page 37: Connecting The Printer

    Getting Started Assembling the Accutome A-Scan Plus Connecting the Printer To install the printer: Locate the printer connector, on the side, at the left of the instrument (see Figure 6 on page 22). Connect the printer cable from the printer to the printer connector.

  • Page 38: Connecting The Keyboard

    Accutome A-Scan Plus User’s Guide Connecting the Keyboard To connect the keyboard: Locate the keyboard connector, on the side, at the left of the instrument (see Figure 6 on page 22). The keyboard cable is keyed with a side that is flat.

  • Page 39: Connecting The Serial Link

    PC. The cable required is required is a DB-9 Male to DB-9 Female Straight Through serial cable, Accutome part number 24-4012. You must also configure the serial link port in the Setup Screen. (Refer to "How to Set the Serial Link" on page 96 of this manual.)

  • Page 40: Connecting The Power

    User’s Guide Connecting the Power There are two components to connect power to the Accutome A-Scan Plus; there is a power supply which regulates the voltage going to the instrument, and there is a grounded power cable which connects from the power supply to an outlet.

  • Page 41: Connecting The Probe

    Getting Started Assembling the Accutome A-Scan Plus Connecting the Probe The Accutome A-Scan Plus probe connector is located on the right side of the instrument (facing the instrument). To connect the probe: Locate the probe connector, on the side, at the right of the instrument, facing the screen (see Fig- ure 7 below.)

  • Page 42: Figure 8 Probe Connected

    Accutome A-Scan Plus User’s Guide The probe connector is keyed and has a red dot indicating the key. Insert the probe with the red dot facing the back of the instrument. (Refer to Figure 8 below.) Probe Figure 8 Probe Connected...

  • Page 43: Probe Setup

    Probe Setup Probe Setup The Accutome A-Scan Plus probe is an integral component. There are several options available for probe use. The Accutome A-Scan Plus probe can be used: With an immersion shell Mounted into a Goldman Tonometer With a probe handle extension...

  • Page 44: Accutome Probe With An Immersion Shell

    Accutome A-Scan Plus User’s Guide Accutome Probe with an Immersion Shell The Accutome probe is designed to be used with an Immersion Shell. When using an immersion shell ensure that there is a distance of 5 - 14.5 mm between the...

  • Page 45: Accutome Probe With Goldman Tonometer Adapter

    Getting Started Probe Setup Accutome Probe with Goldman Tonometer Adapter The Accutome probe is designed to be used with an Goldman Tonometer Adapter. When using the Tonometer Adapter: Slide the adapter over the end of the probe as shown in Figure 12 below.

  • Page 46: Accutome Probe With Handle Extension

    Accutome A-Scan Plus User’s Guide Accutome Probe with Handle Extension The Accutome probe is designed to be used with an handle extension to increase the length of the probe. When using the probe handle extension: Insert the probe into the handle extension as shown in Figure 13 below.

  • Page 47: Figure 14 Probe With Handle Extension And Insertion Tool

    Getting Started Probe Setup Figure 14 Probe with Handle Extension and Insertion Tool Figure 15 Probe with Handle Extension...

  • Page 48: Basic Operation

    Push the power button located at the bottom left corner of the instrument (see Figure 16 below). When you power on the Accutome A-Scan Plus a splash screen will appear. The instrument will go through an initialization process and when com- pleted will display the Measure Screen.

  • Page 49: Figure 17 Measure Screen Displayed

    Getting Started Basic Operation The first screen you see will be the Measure Screen. Scanning mode preferences are main- tained while the instrument is powered off. Measure Patient Records Preferences Calculate Print Negative Affirmative Figure 17 Measure Screen Displayed...

  • Page 50: How To Adjust The Contrast

    Accutome A-Scan Plus User’s Guide How to Adjust the Contrast When you turn on the Accutome A-Scan Plus you may have to adjust the contrast of the display. The display is an LCD (Liquid Crystal Display) and depending upon the angle from which you are viewing the screen, the images displayed may not be bright enough or may be too bright.

  • Page 51: Using The Test Block

    Getting Started Basic Operation Using the Test Block The Accutome A-Scan Plus is equipped with a test block, located at the top, right side (facing the display) of the instrument. Refer to Figure 18 below for location. The test block is provided as a way to test the basic operation of the instrument and the probe.

  • Page 52: How To Start A New Patient

    Accutome A-Scan Plus User’s Guide How to Start a New Patient To start a new Patient: Press the button under the "Start New Patient" selection on the Measure, Calculate IOL or Patient Records Screens. Refer to Figure 19 below. Figure 19...

  • Page 53: Figure 20 Patient Field Activated

    Getting Started Basic Operation When you start a new patient the Accutome A- Scan Plus will clear all fields on the Measure Screen as follows: Gain set to default Gates/Threshold set to default Waveforms deleted K readings deleted Entered AXL (if any) deleted.

  • Page 54: Figure 21 Entering New Patient Information

    Accutome A-Scan Plus User’s Guide √ Enter the Patient name. Press the knob or the button, to save the Patient name and deactivate the field. Figure 21 Entering New Patient Information...

  • Page 55: Figure 22 New Patient Information Entered

    Getting Started Basic Operation If you also need to enter an ID, select the ID field √ by turning the knob. Press the knob or the but- ton, to activate the ID field. √ Enter the ID and press the knob or the button, to save the ID and to deactivate the field.

  • Page 56: How To Enter Text Without A Keyboard

    When a field is active requiring text, and you have a keyboard, you simply have to enter the text. The Accutome A-Scan Plus also provides a method of entering text that does not require a keyboard. If a field is activated that requires text, and the keyboard has not...

  • Page 57: Screen Keyboard Features

    The Accutome A-Scan Plus allows you to switch between using the optional keyboard and the screen keyboard. If you have the optional keyboard and would like to use the screen keyboard, press Ctrl-K .

  • Page 58: Entering A Patient With The Screen Keyboard

    "Undo" selection. When you have completed the Patient field, press the button beneath the "Done" selection. The Accutome A-Scan Plus will close the screen keyboard and re-display the previous selections over the buttons.

  • Page 59: How To Take A Measurement

    The selections you can change are: Automatic/Manual - which method are you using to take the measurement automatic or manual? Automatic allows the Accutome to determine when the probe has acquired a measurement and manual allows the operator to determine when to capture the waveform.
  • Page 60 Patient’s eye. If you are not using the running mode, press the foot switch or the Running/Frozen selection. The Accutome A-Scan Plus will proceed to the next empty waveform (if available). If you are using the Automatic mode, the Accu-...

  • Page 61: How To Perform A Calculation

    To calculate a lens: Press the Calculate button, located at the right side of the front panel (see Figure 17 on page 31). The Accutome will display the Calculate IOL Screen as shown in Figure 25 below. *Note: For more information on Calculating IOLs refer to "Performing Calculations"...

  • Page 62: Figure 26 Acd Field Selected

    When the field is active either rotate the knob or manually enter the ACD value in millimeters (mm). If you would like the Accutome to calculate the phakic ACD press the "Delete" key or the X button to remove the entered value and replace it with "Calc"...

  • Page 63: Figure 27 K1, K2 Values Entered

    K1 values in Diopters or mm. Enter K2 value in the same manner as K1. *Note: When you first receive the Accutome A-Scan Plus the IOL Groups are empty. If there are no IOL Groups present on the Calculate IOL Screen you will not be able to perform a calculation.

  • Page 64: Figure 28 Calculation Completed

    These values are the optimal lens, and do not necessarily exist in the real world. The Accutome A-Scan Plus also pro- vides you with the power of the IOL that would achieve emmetropia. The emmetropic power is calculated and displayed under the ametropoic power in a smaller font.

  • Page 65: How To Print A Record

    (OD and OS). To print a record: With the appropriate Patient record active, press the "Print " button, located at the right side of the front panel. The Accutome A-Scan Plus will print the calcula- tion record.

  • Page 66: How To Save Patient Records

    Accutome A-Scan Plus User’s Guide How to Save Patient Records The Accutome A-Scan Plus allows you to save patient records at any time. You can save the record after you have taken all the desired measurements or, after you have taken the measurements and performed the calculation.

  • Page 67: Figure 30 Patient Record Stored

    Getting Started Basic Operation Press the button below "Save Patient". The Accu- tome A-Scan Plus will store the Patient record. The "Not Stored" prompt Patient ID will be changed to "Stored" and a new entry will appear in the Patient List.
  • Page 68 Accutome A-Scan Plus User’s Guide...

  • Page 69: How To Use The Buttons And Screens

    How to Use the Buttons and Screens Overview The Accutome A-Scan Plus consists of a screen display with buttons located beneath the screen and buttons located to the right of the screen. The A-Scan allows you to control every feature for capturing waveforms and...

  • Page 70: Accutome A-Scan Plus Buttons

    Accutome A-Scan Plus Buttons Accutome A- There are two types of buttons available on the Scan Plus Accutome A-Scan Plus front panel, dedicated buttons Buttons and soft menu buttons. Dedicated Buttons The dedicated buttons, located at the side of the front panel, in the same area as the knob, all perform a dedicated function.

  • Page 71: Measure Button

    How to Use the Buttons and Screens Accutome A-Scan Plus Buttons *Note: Two of the dedicated buttons, Calculate and Preferences, can be pressed multiple times to scroll through lower level linked screens. Measure Button The Measure button displays the Measure Screen where the user can acquire patient waveforms and adjust waveform parameters.

  • Page 72: Print

    Accutome A-Scan Plus User’s Guide If you press the Preferences button a second time the instrument will display the lower level logically linked screen; i.e. Setup Screen. Print The Print button prints the information displayed on the current screen. When pressed from the Measurement Screen the print button will print up to five current eye waveforms (if five exist).

  • Page 73: Soft Menu Buttons

    How to Use the Buttons and Screens Accutome A-Scan Plus Buttons Soft Menu Buttons There is a series of buttons directly below the Accutome display. The buttons offer soft menu selections and change from screen to screen. There are three types of soft menu selection:...

  • Page 74: Screens

    Screens The Accutome A-Scan Plus is set up as a series of high level screens with logically linked lower level screens. Each of the high level screens is accessed by pressing one of the dedicated function buttons.

  • Page 75: Soft Menus

    The message displayed describes the currently selected screen element. Sounds The Accutome A-Scan Plus will also provide you with audio cues. There is a constant tone initiated when the probe contacts the eye. The frequency of the tone increases the closer the waveform is to being acceptable according to the criteria established in the Auto Mode.

  • Page 76: Screen Hierarchy

    Setup Screen by pressing the dedicated Preferences button a second time. Screen Hierarchy Figure 32 below illustrates the hierarchy of the Accutome A-Scan Plus screens. Notice how each high level screen is logically associated with the screens linked at a lower level.

  • Page 77: Top Level Screens

    Patient Records - for saving and retrieving patient records Preferences - for defining eye types, velocities and Accutome settings Associated Sub-Level Screens Each of the high level screens has associated lower level screens that are accessed by pressing a soft menu button on the high level screen.

  • Page 78: How Buttons, Screens And Knob Work Together

    Certain screens require text entry. The Accutome A- Scan Plus has an optional keyboard, but if you don’t have the keyboard the Accutome A-Scan Plus will automatically provide you with a new soft menu of alphanumeric characters. You select the various...

  • Page 79: Selecting A New Active Area

    How to Use the Buttons and Screens Screens Selecting a New Active Area To select a new active area, you must first deactivate the current active area by pressing the knob, or the Affirmative button. Changing Fields in the Active Area There are two primary types of fields;...

  • Page 80: Numeric Fields

    Accutome A-Scan Plus User’s Guide Numeric Fields Fields that require a numeric value can be selected and adjusted with the knob. To enter a numeric value in a field: Select the field by rotating the knob. Activate the field by pressing the knob or the Affir- mative button.

  • Page 81: Keyboard Shortcuts

    How to Use the Buttons and Screens Keyboard Shortcuts Keyboard The Accutome A-Scan Plus allows you to perform Shortcuts operations from the keyboard. There is no need to push buttons to acquire patient measurements; all measurement functions can be executed using the keyboard shortcuts given in Table 1 below.

  • Page 82: Using The Footswitch

    Accutome A-Scan Plus User’s Guide Using the The footswitch performs four functions: Footswitch When you are acquiring measurements, the foot switch will capture a waveform. Will select one of the five waveforms on the Mea- sure Screen. Will delete the current waveform on the Measure Screen.

  • Page 83: Preferences

    Preferences Setting Up the The Accutome A-Scan Plus is equipped with personal Accutomre A- preference options, and provides the flexibility necessary Scan Plus to customize your machine. You can not only add eye types and lens materials, you can also set many operational defaults.

  • Page 84: How To Access Preferences

    (see Figure 33 below). Preferences Button Figure 33 Preferences Button *Note: If you press the Preferences button a second time the Accutome A-Scan Plus will scroll to the Setup Screen, which is the next lower level linked screen.

  • Page 85: Top Level Of Preferences

    Top Level of Preferences When you press the Preferences button the Accutome A-Scan Plus will display the Eye Types screen (see Figure 34 below). In the Eye Types screen you can add a new Eye Type, new lens material, new Anterior/ Vitreous material and assign velocities to each of these materials.

  • Page 86: How To Add A New Eye Type

    Accutome A-Scan Plus User’s Guide How to Add a The Accutome A-Scan Plus provides the ability to New Eye Type customize the current patient eye type for unique or rare eye types using the Customize Eye Type screen. When you add a new eye type you will add the eye type to the Eye Types table shown in Figure 35 on page 69.

  • Page 87: Adding A New Lens Material

    Preferences How to Add a New Eye Type Adding a New Lens Material Before using a material in the definition of an Eye Type, the lens material must exist in the lens material table. To add a new lens material: Rotate the knob and select the Lens Material table.

  • Page 88: Figure 36 Selecting A Cell To Enter New Lens Material

    Accutome A-Scan Plus User’s Guide Press the knob to activate the Lens Material table. The table is activated when it is surrounded by a dashed border as shown in Figure 36 below. When the table is activated rotate the knob until an empty cell in the Material column is selected.

  • Page 89: Figure 37 Entering The Name For New Lens Material

    Preferences How to Add a New Eye Type Enter the name of the new Lens Material. √ Press the knob or the button, to save the Mate- rial name and to deactivate the cell. [All eye types include an assumed cornea] Figure 37 Entering the Name for New Lens Material...

  • Page 90: Assigning A Velocity To The New Lens Material

    Accutome A-Scan Plus User’s Guide Assigning a Velocity to the New Lens Material The Accutome A-Scan Plus is set up at the factory with default sonic velocities for the most common types of lens materials. For every eye type the Accutome A-Scan Plus knows which velocity to use.

  • Page 91: Adding The New Eye Type Information

    Preferences How to Add a New Eye Type Adding the New Eye Type Information Rotate the knob and select the Eye Types table. √ Press the knob or the button, to activate the Eye Types table. Within the Eye Types table, rotate the knob to select an empty cell, indicated by a solid black border, for entering the new eye type name.

  • Page 92: Figure 40 Adding The New Eye Type Name

    Accutome A-Scan Plus User’s Guide Enter the name of the new Eye Type. √ Press the knob or the button, to save the Eye Type Name and to deactivate the cell. [All eye types include an assumed cornea] Figure 40...

  • Page 93: Figure 41 Activating The Area To Select New Lens Material

    Preferences How to Add a New Eye Type Within the Eye Types table, rotate the knob to select the Lens cell associated with the Eye Type Name you just entered. √ Press the knob or the button, to activate the cell, indicated by the dashed border.

  • Page 94: Figure 42 Lens Material Selected

    Accutome A-Scan Plus User’s Guide Within the Lens cell, rotate the knob to select one of the pre-entered Lens Materials. In the example below, Glass is the newly added and selected lens material. (If you previously added new lens mate- rials, they should appear in this list.)

  • Page 95: Figure 43 Lens Thickness Entered

    Preferences How to Add a New Eye Type Within the Eye Types table, rotate the knob to select the Lens Thickness Cell associated with the current Eye Type Name, and Lens. √ Press the knob or the button, to activate the cell, indicated by the dashed border.

  • Page 96: Figure 44 Anterior Chamber Material Selected

    Accutome A-Scan Plus User’s Guide Within the Eye Types table, rotate the knob to select the AC cell associated with the current Eye Type Name, and Lens. √ Press the knob or the button, to activate the cell, indicated by the dashed border.

  • Page 97: Figure 45 Vitreous Chamber Material Selected

    Preferences How to Add a New Eye Type Within the Eye Types table, rotate the knob to select the VC cell associated with the current Eye Type Name, Lens, and Anterior Chamber. √ Press the knob or the button, to activate the cell, indicated by the dashed border.

  • Page 98: Eye Type Screen Menu Selections

    Accutome A-Scan Plus User’s Guide Eye Type There are three menu selections available for execution Screen Menu at the bottom of the Eye Types Screen. Two of the Selections selections, "Reset Field to Factory" and "Reset All to Factory" can be used to restore eye type information.

  • Page 99: Figure 47 Restore Selected Field Prompt

    Eye Type Screen Menu Selections Press the button beneath the "Reset Field to Fac- tory" selection. The Accutome A-Scan Plus will prompt you with the message "Are you sure?" as shown in Figure 47 below. You must select either "Cancel" or "Yes".

  • Page 100: Figure 48 Selected Field Restored

    Accutome A-Scan Plus User’s Guide The Accutome A-Scan Plus will reset the selected field to its factory default as shown in Figure 48 below. [All eye types include an assumed cornea] Figure 48 Selected Field Restored...

  • Page 101: Reset All To Factory

    Preferences Eye Type Screen Menu Selections Reset All to Factory The Reset All to Factory selection provides you with the ability to return all pre-entered fields on the Eye Types Screen to their default factory values. If you have already changed several pre-entered fields on the Eye Type screen and you would like to reset them: Press the button beneath the selection "Reset All...

  • Page 102: Figure 50 Restore All Fields Prompt

    Affirmative button located at the right side of the front panel.) The Accutome A-Scan Plus will reset all fields to their factory default as shown in Figure 48 on page [All eye types include an assumed cornea]...

  • Page 103: More Settings

    From the high level Eye Types Screen you can access the remainder of the preference options. When you press the button beneath the selection "More Settings" the Accutome A-Scan Plus will display the Setup Screen as shown in Figure 51 on page 86. Setup Screen Fields...

  • Page 104: Figure 51 More Settings - Setup Screen

    Accutome A-Scan Plus User’s Guide Figure 51 More Settings - Setup Screen...

  • Page 105: How To Set The Print Title

    Preferences More Settings How to Set the Print Title The Accutome A-Scan Plus provides you with the ability to have a title appear on every patient printout. For example, you may want to have a clinic name printed at the top of every page.

  • Page 106: Figure 53 Print Title Field Activated

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the field, indicated by the dashed border. Figure 53 Print Title Field Activated...

  • Page 107: Figure 54 Entering The Print Title

    Preferences More Settings Within the Print Title field, enter the title you would like printed on every record. Figure 54 Entering the Print Title...

  • Page 108: Figure 55 Print Title Added

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to save the entered Print Title and to deactivate the field. Figure 55 Print Title Added...

  • Page 109: How To Set The Printer

    Preferences More Settings How to Set the Printer In order to obtain the best printouts from the Accutome A-Scan Plus, it is recommended that all records be printed on a laser printer that is compatible to an HP LaserJet. However, the Accutome A-Scan Plus provides many printer options to meet most printing needs.

  • Page 110: Figure 56 Printer Field Selected

    Accutome A-Scan Plus User’s Guide To set the Printer: Within the Setup Screen, rotate the knob to select the Printer field, indicated by a solid black border. Figure 56 Printer Field Selected...

  • Page 111: Figure 57 Printer Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. Figure 57 Printer Field Activated...

  • Page 112: Figure 58 Selecting The Printer

    Accutome A-Scan Plus User’s Guide Within the Printer field, rotate the knob to select one of the pre-entered options; HP LaserJet Compatible, HP InkJet (Speed), HP InkJet (Quality), Generic / Text Only, or None. HP Laser Jet Compat ible Figure 58...

  • Page 113: Figure 59 New Printer Selected

    Preferences More Settings √ Press the knob or the button, to save the selected Printer and to deactivate the field. H P La serJ et Co mpat ible Figure 59 New Printer Selected...

  • Page 114: How To Set The Serial Link

    Accutome A-Scan Plus User’s Guide How to Set the Serial Link The Accutome A-Scan Plus provides a serial port as a means of transferring information from the Accutome A- Scan Plus to a PC (Personal Computer). You can enable the port to link to a text application on the PC.

  • Page 115: Figure 60 Serial Data Printout

    Preferences More Settings Figure 60 Serial Data Printout...

  • Page 116: Figure 61 Serial Link Field Selected

    Accutome A-Scan Plus User’s Guide To set the Serial Link: Within the Setup Screen, rotate the knob to select the Serial Link field, indicated by a solid black bor- der. H P La serJ et Co mpat ible Figure 61...

  • Page 117: Figure 62 Serial Link Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 62 Serial Link Field Activated...

  • Page 118: Figure 63 Selecting The Serial Link

    Text Only, Text with Data, or None. The applica- tion to which you are connecting the serial port must be able to receive text. The Accutome A- Scan Plus will only transmit text. H P La serJ et Co mpat ible...

  • Page 119: Figure 64 New Serial Link Selected

    Preferences More Settings √ Press the knob or the button, to save the selected Serial Link and to deactivate the field. H P La se rJe t Comp ati bl e Figure 64 New Serial Link Selected...

  • Page 120: How To Set The Serial Baud

    Accutome A-Scan Plus User’s Guide How to Set the Serial Baud The Accutome A-Scan Plus allows you to set the baud rate at which data will be transmitted from the serial port to the computer. The factory default baud is 38400. The...

  • Page 121: Figure 66 Serial Baud Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 66 Serial Baud Field Activated...

  • Page 122: Figure 67 Selecting The Serial Baud

    Accutome A-Scan Plus User’s Guide Within the Serial Baud field, rotate the knob to select one of the pre-entered options; 9600 8-N-1, 19200 8-N-1, 38400 8-N-1, 57600 8-N-1 or 115200 8-N-1 H P La serJ et Co mpat ible Figure 67...

  • Page 123: Figure 68 New Serial Baud Selected

    Preferences More Settings √ Press the knob or the button, to save the selected Serial Baud and to deactivate the field. H P La serJ et Co mpat ible Figure 68 New Serial Baud Selected...

  • Page 124: How To Set Delete Confirm

    How to Set Delete Confirm The Delete Confirm field allows you to set the times that the Accutome A-Scan Plus will cue you when you are going to delete a Patient record, an IOL, or any other stored information. In other words, when you are going to delete something, the Accutome A-Scan Plus will require you, or not require you to confirm the deletion.

  • Page 125: Figure 70 Delete Confirm Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 70 Delete Confirm Field Activated...

  • Page 126: Figure 71 Selecting The Delete Confirm Value

    None (all of the time, some of the time, or none of the time). When Delete Confirm is set to All or Some (unless confirm set to None) the Accustome A-Scan Plus will ask for delete confirmation for the following situations: Start New Patient...

  • Page 127: Figure 72 New Delete Confirm Entered

    Preferences More Settings √ Press the knob or the button, to save the selected Delete Confirm and to deactivate the field. H P La serJ et Co mpat ible Figure 72 New Delete Confirm Entered...

  • Page 128: How To Adjust The Contrast

    The contrast can be adjusted at any time, on any screen, by pressing and holding the preferences button while turning the knob. To adjust the Accutome A-Scan Plus Contrast: Within the Setup Screen, rotate the knob to select the Contrast field, indicated by a solid black bor- der.

  • Page 129: Figure 74 Contrast Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 74 Contrast Field Activated...

  • Page 130: Figure 75 Adjusting The Contrast

    Accutome A-Scan Plus User’s Guide With the Contrast field active, rotate the knob to adjust the white/grey contrast of the screen. The amount of grey vs. white is indicated in the Con- trast field by a solid grey bar, that increases or decreases as you adjust the contrast.

  • Page 131: Figure 76 Contrast Adjusted

    Preferences More Settings √ Press the knob or the button, to save the altered Contrast and to deactivate the field. HP L aserJet Compa tible Figure 76 Contrast Adjusted...

  • Page 132: How To Set The Default Patient Eye Type

    User’s Guide How to Set the Default Patient Eye Type The Accutome A-Scan Plus has a default eye type setting so that every time you start a new patient you do not have to select an eye type. When you start a new patient the eye type displayed on the Measure Screen will be the default eye type selected in the Setup Screen.

  • Page 133: Figure 78 Default Eye Type Field Selected

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 78 Default Eye Type Field Selected...

  • Page 134: Figure 79 New Default Eye Type Selected

    Accutome A-Scan Plus User’s Guide Within the Default Eye Type field, rotate the knob to select one of the pre-entered Eye Types as shown in Figure 79 below H P La serJ et Co mpat ible Figure 79 New Default Eye Type Selected...

  • Page 135: Figure 80 Default Eye Type Changed

    Preferences More Settings √ Press the knob or the button, to save the selected Default Eye Type and to deactivate the field. H P La serJ et Co mpat ible Figure 80 Default Eye Type Changed...

  • Page 136: How To Set The Default Id

    Accutome A-Scan Plus User’s Guide How to Set the Default ID The Accutome A-Scan Plus provides you with the ability to have a Default ID appear whenever you start a new patient. For example, you may want to have a doctor’s name, or a clinic’s name as a Default ID.

  • Page 137: Figure 82 Default Id Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 82 Default ID Field Activated...

  • Page 138: Figure 83 Entering The Default Id

    Accutome A-Scan Plus User’s Guide Within the Default ID field, enter the default ID. H P La serJ et Co mpat ible Figure 83 Entering the Default ID...

  • Page 139: Figure 84 Default Id Added

    Preferences More Settings √ Press the knob or the button, to save the entered Default ID and to deactivate the field. H P La serJ et Co mpat ible Figure 84 Default ID Added...

  • Page 140: How To Set The Default Gain

    Accutome A-Scan Plus User’s Guide How to Set the Default Gain The Default Gain parameter allows you to adjust the new patient ultrasound gain. You can adjust the gain for any waveform from the Measure Screen, but when you adjust the gain value on the Setup Screen the adjusted gain becomes the default gain for all new patients.

  • Page 141: Figure 86 Default Gain Field Changed

    Preferences More Settings Rotate the knob to select one of the pre-entered gain values, or manually enter the new value. The gain is adjustable in increments of 1 dB from 0 - 20 When the gain is at the appropriate level, press √...

  • Page 142: How To Set The Target Refraction

    When you are calculating IOLs one of the values you need to enter is the desired target refraction. The Accutome A-Scan Plus allows you to specify the default target refraction that is most common for patients. It is also possible to modify the target refraction on a per patient basis.

  • Page 143: Figure 88 Target Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. HP La s erJ et Co mp a tib le Figure 88 Target Field Activated...

  • Page 144: Figure 89 Adjusting The Target

    Accutome A-Scan Plus User’s Guide With the Target field active, rotate the knob until you reach the appropriate value or enter the target number on the keyboard. H P La serJ et Co mpat ible Figure 89 Adjusting the Target...

  • Page 145: Figure 90 Target Adjusted

    Preferences More Settings √ Press the knob or the button, to save the adjusted Target and to deactivate the field. HP L aserJ et Co mpa tible Figure 90 Target Adjusted...

  • Page 146: How To Set The K Index

    Index, a * appears beside the entry. To change or view the K index, change or reenter the diopter entry. The Accutome A-Scan Plus will prompt you with the default and current K indexes and ask which one you want...

  • Page 147: Figure 91 K Index Field Selected

    Preferences More Settings To set the K index: Within the Setup Screen, rotate the knob to select the K Index field, indicated by a solid black border. HP La s erJ et Co mp a tib le Figure 91 K Index Field Selected...

  • Page 148: Figure 92 K Index Field Activated

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the field, indicated by the dashed border. HP La s erJ et Co mp a tib le Figure 92 K Index Field Activated...

  • Page 149: Figure 93 Adjusting The K Index

    Preferences More Settings Rotate the knob to adjust the K index , or manually enter the new value. The maximum value is 1.5000 and the minimum is 1.2500. HP La s erJ et Co mp a tib le Figure 93 Adjusting the K Index...

  • Page 150: Figure 94 K Index Field Adjusted

    Accutome A-Scan Plus User’s Guide When the K index is correct, press either the knob √ or the button, to save the adjusted value and to deactivate the field. HP La s erJ et Co mp a tib le Figure 94...

  • Page 151: How To Set The Iol Step

    Preferences More Settings How to Set the IOL Step The Accutome A-Scan Plus allows you to modify the diopter step used when calculating IOL power lists. To adjust the IOL Step: Within the Setup Screen, rotate the knob to select the IOL Step field, indicated by a solid black bor- der.

  • Page 152: Figure 96 Iol Step Field Activated

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the field, indicated by the dashed border. HP La s erJ et Co mp a tib le Figure 96 IOL Step Field Activated...

  • Page 153: Figure 97 Adjusting The Iol Step

    Preferences More Settings Rotate the knob to select one of the pre-entered step values, or manually enter the new value. The IOL power step is adjustable in increments of 0.05 D from 0.05 - 5.00 D. HP La s erJ et Co mp a tib le Figure 97 Adjusting the IOL Step...

  • Page 154: Figure 98 Iol Step Adjusted

    Accutome A-Scan Plus User’s Guide When the IOL Step is at the appropriate value, √ press either the knob or the button, to save the adjusted value and to deactivate the field. HP La s erJ et Co mp a tib le...

  • Page 155: How To Adjust The Date And Time

    The Measure Screen displays the date and time that a waveform is captured. When you first set up the Accutome A-Scan Plus you can adjust the date and time as appropriate for your time zone. Both the date and time are divided into three separate fields. You adjust each field individually.

  • Page 156: Figure 100 Day Field Activated

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the field, indicated by the dashed border. H P La serJ et Co mpat ible Figure 100 Day Field Activated...

  • Page 157: Figure 101 Adjusting The Day

    Preferences More Settings With the Day field active, rotate the knob until you reach the appropriate day number or enter the number with the keyboard. HP La s erJ et Co mp a tib le Figure 101 Adjusting the Day...

  • Page 158: Figure 102 Day Adjusted

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to save the adjusted Day and to deactivate the field. HP La s erJ et Co mp a tib le Figure 102 Day Adjusted If necessary, adjust the Month (M) and Day (D) fields of the date in the same manner.

  • Page 159: How To Set The Auto Mode

    Preferences More Settings How to Set the Auto Mode The Accutome A-Scan Plus allows you to define the Automatic measurement mode by specifying how a measurement is automatically captured. There are a total of three criteria available and each can be turned off or on by the user on the Setup screen.

  • Page 160: Figure 103 Auto Mode Sclera Selected

    Accutome A-Scan Plus User’s Guide To specify the Auto Mode: Within the Setup Screen, rotate the knob to select the Sclera field of the Auto Mode, indicated by a solid black border. HP La se rJe t Comp ati bl e...

  • Page 161: Figure 104 Auto Mode Sclera Field Activated

    Preferences More Settings √ Press the knob or the button, to activate the field, indicated by the dashed border. HP L aser Jet Co mpa tible Figure 104 Auto Mode Sclera Field Activated...

  • Page 162: Figure 105 Changing The Auto Mode - Turning Off Sclera

    Accutome A-Scan Plus User’s Guide With the Sclera field active, rotate the knob until you the word "Off" is displayed. Automatic mode will no longer be triggered by sclera detection. HP L aserJ et Co mpa tible Figure 105 Changing the Auto Mode - Turning Off Sclera...

  • Page 163: Figure 106 Auto Mode - "Sclera" Off

    Preferences More Settings √ Press the knob or the button, to save the adjusted Sclera and to deactivate the field. HP L aserJ et Co mpa tible Figure 106 Auto Mode - "Sclera" Off...

  • Page 164: Figure 107 Auto Mode - "Stable" Selected

    Accutome A-Scan Plus User’s Guide If you would like to define the Auto Mode by Retina signal quality, rotate the knob to select the "Retina" field. √ Press the knob or the button, to activate the field, indicated by the dashed border.

  • Page 165: Figure 108 Auto Mode Defined By "Stable" Measurement

    Preferences More Settings √ Press the knob or the button, to save Stable as On and to deactivate the field. H P La serJ et Co mpat ible Figure 108 Auto Mode Defined by "Stable" Measurement Select and turn on or off all the Auto Mode criteria until you have accurately defined how a measure- ment will be automatically captured.

  • Page 166: Sound On/Sound Off

    (see "How to Set the Auto Mode" on page 141 of this manual). Restart On/Restart Off The Restart On/Restart Off selection toggles between the two and will prompt the Accutome, when operated in the "Automatic" mode, to automatically restart measuring after a successful reading or to stop after each successful reading.

  • Page 167: Save And Restore Factory Default Gates And Threshold

    More Settings Save and Restore Factory Default Gates and Threshold You may find after using the Accutome A-Scan Plus for a while, that you frequently have to adjust one or several gates and threshold. If you continually make the same adjustments to gates/threshold, you may want to save the adjusted settings as the default for gates/threshold.

  • Page 168: About This Unit

    User’s Guide About This Unit When you press the button beneath the "About This Unit..." selection, the Accutome A-Scan Plus displays another screen, the "About this Unit" screen as shown in Figure 109 below. This screen is informational only and lists the software version, boot version, and the status of the probe.

  • Page 169: Performing Measurements

    Performing Measurements Overview The Accutome A-Scan Plus is very simple to operate, and has advanced features to help you obtain the best possible measurements. The Accutome A-Scan Plus takes measurements by sending a signal through the eye through the ultrasonic probe.

  • Page 170: Measure Screen

    Capture mode (automatic or manual), and probe coupling method (contact or immersion) remain as last set by the user and are retained while the Accutome A- Scan Plus is turned off. Figure 110 Measure Screen Displaying Current Settings...

  • Page 171: Information Displayed On The Measure Screen

    Performing Measurements Measure Screen Information Displayed on the Measure Screen The Measure Screen provides the continuous display of Axial Length, ACD, Lens Thickness, and Vitreous dimensions for the active patient. The top, left side of the screen displays the active patient waveform.

  • Page 172: Starting A New Patient

    You can start a new patient from either the Measure Screen, Calculate IOL Screen, or from the Patient Records Screen. Once you start a new patient, the Accutome A-Scan Plus will clear all previous patient information and set gain, gate and ID to the default values.

  • Page 173: How To Set The Eye Type

    Performing Measurements How to Set the Eye Type How to Set the When the Accutome A-Scan Plus is set up at the factory, Eye Type it is equipped with predefined eye types and specific velocities for the predefined eye types. Descriptions of...

  • Page 174: Eye Type Materials And Velocities

    Accutome A-Scan Plus User’s Guide Eye Type Materials and Velocities The tables below list the preset eye types and define the materials and velocities for each eye type. Table 2 Eye Types Eye Type Name Lens Thickness Phakic Phakic Measured...

  • Page 175: Figure 111 Eye Type Selected

    How to Set the Eye Type Setting the Eye Type The patient’s OD or OS eye type may not match the default provided by the Accutome A-Scan Plus default preferences. To set the eye type: Within the Measurement Screen, rotate the knob to select the eye type located at the top right side of the screen.

  • Page 176: Figure 112 Eye Type Active

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the field, indicated by the dashed border. (See Figure 112 below.) Figure 112 Eye Type Active...

  • Page 177: Figure 113 Eye Type Changed

    Performing Measurements How to Set the Eye Type Within the eye type field, rotate the knob to scroll through the list of eye types. Select the appropri- √ ate eye type. Press the knob or the button to save the new eye type. Figure 113 Eye Type Changed...

  • Page 178: Probe Application Methods

    Select the method you will be using by pressing the Contact/Immersion soft menu button. Immersion The Accutome A-Scan Plus makes it easy to use the Immersion method. The immersion method yields improved accuracy by allowing direct detection of the corneal echo and eliminating compression of the ACD associated with the contact method.

  • Page 179: Capture Modes

    The Manual mode allows the user to determine when a measurement is captured. Auto Mode When you are using the Auto mode the Accutome A- Scan Plus uses the definition of automatic measurement that has been set up in the unit’s preferences.

  • Page 180: Manual Mode

    "How to Set the Auto Mode" on page 141 of this manual. Another aspect of the Auto Mode that is established in the Accutome A-Scan Plus setup is the Restart feature. If ’Restart’ is set to ’ON’ and less than five measurements have been taken, the Auto mode restarts measurement after automatic capture.

  • Page 181: How To Capture A Waveform

    Running/Frozen selection. The Accutome A-Scan Plus will switch from Running to Frozen. Using the Measure Button When you want to capture a waveform, press the Measure button at the top right corner. The Accutome A- Scan Plus will switch from Running to Frozen.

  • Page 182: Figure 114 Measurement Selected

    Accutome A-Scan Plus User’s Guide How to Select After you have taken measurements you may want to go a Measure- back and review one of the captured waveforms. There ment are two ways to select a previous measurement; using the knob and button, or by using the foot switch.

  • Page 183: Figure 115 Measurement Activated With Waveform Review Menu

    Performing Measurements How to Select a Measurement Selecting a Measurement Using Waveform Review Menu The Waveform Review Menu will be displayed at the bottom of the Measure Screen when the waveform area is active. To select a measurement using the Waveform Review Menu: Within the Measurement Screen, rotate the knob to select the waveform area.

  • Page 184: Selecting A Measurement With The Foot Switch

    Accutome A-Scan Plus User’s Guide Press the button beneath the "View" selection. The measurement outlined with white text against a black background in the Measurement Table is the active measurement. The View button will scroll through all the measurements in the Mea- surement Table.

  • Page 185: How To Delete A Measurement

    Performing Measurements How to Delete a Measurement How to Delete You may want to delete one of the captured patient a Measure- measurements. You can delete a measurement with the ment "X" button, the keyboard delete key or by using the foot switch Deleting a Measurement with X Button or Keyboard To delete a selected waveform press on the "X"...

  • Page 186: How To Adjust Gates/Threshold

    The purpose of the gates/threshold is to delimit events. The gates/threshold tell the Accutome A-Scan Plus when to start looking for the different events in the waveform. Events will be detected to the right of the gate and above the threshold.

  • Page 187: Available Gates/Threshold

    Performing Measurements How to Adjust Gates/Threshold The process of adjusting gates/threshold consists of: Selecting the gates/threshold Repositioning the gate location Available Gates/Threshold A gate delimits an event, such as the detection of the cornea. There are four vertical gates and one horizontal threshold along the horizontal and vertical axis of the waveform.

  • Page 188: Figure 116 Current Measurement Waveform Selected

    Press the knob or the button, to activate the cur- rent waveform area, indicated by the dashed bor- der. When the current waveform is active, the Accu- tome A-Scan Plus will display a new soft menu at the bottom of the Measure screen.

  • Page 189: Figure 117 Waveform Review Menu Activated

    Performing Measurements How to Adjust Gates/Threshold Waveform Review Menu The Waveform Review menu has selections for adjusting gates/threshold, gain, zoom, scrolling, selecting a waveform and for exiting the menu. To select an item from the menu for adjustment, press the button beneath the selection and then rotate the knob to make the adjustment.

  • Page 190: Figure 118 Cornea Gate Selected

    Accutome A-Scan Plus User’s Guide How to Adjust the Cornea Gate The cornea gate should be located before the start of the cornea echo. The active gate is displayed with dashed line while gates/threshold are indicated by dotted lines. To adjust the cornea gate: Press the button beneath the Gate selections until the "Gate Cornea"...

  • Page 191: How To Adjust The Anterior Lens Gate

    Performing Measurements How to Adjust Gates/Threshold How to Adjust the Anterior Lens Gate The anterior lens gate should be located before the start of the first lens echo. *Note: The anterior lens gate is only visible for non-Aphakic eye types To adjust the anterior lens gate: Press the button beneath the Gate selections until the "Gate Ant Lens"...

  • Page 192: Figure 119 Anterior Lens Gate Selected

    Accutome A-Scan Plus User’s Guide When the gate is in the proper position, either press the the button beneath the gate selections to select another gate for adjustment or press the √ button beneath "Done", the knob or the button to deactivate the menu.

  • Page 193: How To Adjust The Posterior Lens Gate

    Performing Measurements How to Adjust Gates/Threshold How to Adjust the Posterior Lens Gate The posterior lens gate should be located before the start of the last lens echo. *Note: The Posterior Lens Gate is visible only if the eye type requires the lens thickness to be Measured and not assumed.

  • Page 194: Figure 120 Posterior Lens Gate Selected

    Accutome A-Scan Plus User’s Guide When the gate is in the proper position, either press the the button beneath the gate selections to select another gate for adjustment or press the √ button beneath "Done", the knob or the button to deactivate the menu.

  • Page 195: Figure 121 Retina Gate Selected

    Performing Measurements How to Adjust Gates/Threshold How to Adjust the Retina Gate The retina gate should be located before the start of the retina echo. To adjust the retina gate: Press the button beneath the Gate selections until the "Gate Retina" is visible. Tip: You can use CTRL+R to select the Retina Gate directly from the keyboard, or hold to select...

  • Page 196: Figure 122 Threshold Gate Selected

    Accutome A-Scan Plus User’s Guide How to Adjust the Threshold The threshold gate should be located at the minimum echo height or amplitude. To adjust the threshold gate: Press the button beneath the Gate selections until the "Gate Threshold" is visible.

  • Page 197: How To Apply Gate Adjustments To All Waveforms

    Performing Measurements How to Adjust Gates/Threshold How to Apply Gate Adjustments to All Waveforms You may want to apply a gate adjustment to all current eye waveforms. To apply a gate adjustment: Press and hold the button beneath the Gate selec- tions for approximately one second.

  • Page 198: Figure 123 Gain Selected

    Accutome A-Scan Plus User’s Guide How to Adjust The Gain parameter on the Measure Screen allows you the Gain to adjust the gain of the signal received from the ultrasonic probe that is displayed as the waveform. The waveform must be selected and active to display the waveform Review menu.

  • Page 199: Figure 124 Gain Field Changed

    Performing Measurements How to Adjust the Gain Rotate the knob to select one of the pre-entered gain values. *Note: To return the gain to the new patient default value, press and hold the gain button for approximately 1 second. Tip: You can use CTRL+G to increase the gain 1dB directly from the keyboard, or hold to set the gain to the default.

  • Page 200: Figure 125 Zoom Selected

    Accutome A-Scan Plus User’s Guide How to Use The zoom feature allows you to zoom in on a selected Zoom waveform. The height of the waveform remains the same, only the width changes. Zoom expands the distance scale. The waveform must be selected and active to display the waveform Review menu.

  • Page 201: Figure 126 Zoom Changed

    Performing Measurements How to Use Zoom Rotate the knob to select one of the preset zoom values. Tip: You can use CTRL+Z to increase the zoom with wrap directly from the keyboard, or hold to set the zoom to the default 1.6X. Figure 126 Zoom Changed...

  • Page 202: Figure 127 Scroll Selected

    Accutome A-Scan Plus User’s Guide How to Scroll The Scroll feature moves the active waveform from left to right and from right to left. Scroll allows you to view the horizontal dimension of a waveform. This feature can be useful if you are zooming in on a certain area of the measurement and you would like to look at another area of the waveform.

  • Page 203: Figure 128 Measurement Scrolling Changed

    Performing Measurements How to Scroll Rotate the knob to move the waveform. Tip: You can use CTRL+ S to scroll the waveform increasing 1mm directly from the keyboard, or hold to set the scroll to 0. When the waveform is in the correct position, either press another waveform menu selection or press the button beneath "Done", the knob or the √...

  • Page 204: Switching Eyes

    It is very simple to switch between eyes using the Eyes Accutome A-Scan Plus. To switch from OD to OS, or from OS to OD press the button beneath the selection OD/OS. The waveforms and eye type for the selected eye will be displayed.

  • Page 205: Customizing Eye Types

    Customizing Eye Types Overview The Accutome A-Scan Plus not only allows you to create and store custom eye types, you can also customize eye types on-the-fly for an individual patient. Patient Customization If you have a patient with a unique situation, you can specify the eye type, materials, and velocities for either the OD or OS while performing live measurements.

  • Page 206: Customize Eye Type Screen

    An eye type that is considered custom will have a * beside its name on all patient data screens. Customize Eye The Accutome A-Scan Plus provides access to the Type Screen Customize Eye Type screen through the Measure screen. When you power on the instrument it starts up at the Measure screen.
  • Page 207 Customizing Eye Types Customize Eye Type Screen The VC (Vitreous Cavity) name material and velocity The Customize Eye Type screen also has the following soft menu selections activated by the buttons beneath the selection: Edit Text - allows you to enter your own field names;...

  • Page 208: Figure 129 Customize Eye Type Screen

    Accutome A-Scan Plus User’s Guide How to To customize an eye type for an active patient: Customize an Eye Type In the Measure Screen, press the button beneath the selection "Customize Eye Type...". The Cus- tomize Eye Type screen as shown in Figure 129 below will be displayed.

  • Page 209: Figure 130 Os Materials Table Selected

    Customizing Eye Types How to Customize an Eye Type Within the Custom Eye Type Screen, rotate the knob to select the Material/Velocity table, indi- cated by a solid black border. There are two mate- rial/velocity tables on the screen. You should select the one to the right of the patient’s eye that you are customizing.

  • Page 210: Figure 131 Os Materials Table Activated

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to activate the table, indicated by the dashed border. Within the Material/Velocity table, rotate the knob to select the table cell you would like to change. In the example given in Figure 131 below the cell selected is the VC Material cell.

  • Page 211: Figure 132 Changing Vc Material

    Customizing Eye Types How to Customize an Eye Type Within the VC Material cell, rotate the knob to select one of the pre-entered materials as shown in Figure 132 below, You can also press the button beneath the selec- tion "Edit Text" and enter the material name; the material doesn’t have to be pre-entered.

  • Page 212: Figure 133 Vc Material Cell Changed

    Accutome A-Scan Plus User’s Guide √ Press the knob or the button, to save the selected VC Material and to deactivate the field. Notice that they eye type name in Figure 133 below is now followed by an * indicating that is a custom eye type.

  • Page 213: Figure 134 Changing Velocity Field

    Customizing Eye Types How to Customize an Eye Type Within the OS Material/Velocity table, rotate the knob to select the VC Velocity cell. The velocity may need to be changed to correlate to the change in material. Within the VC Velocity cell, rotate the knob to adjust the velocity.

  • Page 214: Figure 135 Os Eye Type Customized

    Accutome A-Scan Plus User’s Guide All the custom changes to the Patient Eye Type will be followed by an asterisk (*), as shown in Figure 135 below. Adjust any other eye type fields following the same procedures. When you have completed customizing the patient eye, press the button beneath the selection "Done..."...

  • Page 215: Performing Calculations

    Performing Calculations Overview Performing IOL calculations with the Accutome A-Scan Plus can be as simple as pressing the Calculate button. There are numerous features available to enhance the calculation process. The Accutome A-Scan Plus instantly calculates emmetropic and targeted ametropoic IOL powers for...

  • Page 216: Figure 136 Calculate Button

    Accutome A-Scan Plus User’s Guide Calculate Button Figure 136 Calculate Button...

  • Page 217: Figure 137 Calculation Fields

    IOL Group. The Accutome A-Scan Plus allows the user to fine tune the calculation by providing the ability to change the AXL value, the lens, formula and desired postoperative result refraction (the target).

  • Page 218: Selecting An Iol Group

    The other formulas do not use the measured ACD field in any way and the field is only shown when Haigis is selected or the formula compare mode is on. Specify the ACD value by allowing the Accutome A-Scan Plus to calculate (Calc) the value or manually enter the value.

  • Page 219: Changing The Axl Value

    The ACD can be estimated by entering "0". Changing the AXL Value The Accutome A-Scan Plus allows the user to fine tune the calculation by providing the ability to change the AXL value. You can select the AXL from any of the five measurements, the average of the measurements, or you can enter your own axial length.

  • Page 220: Entering An Axl Value

    Setup screen default K Index, a * appears beside the entry. To change or view the K index, change or reenter the diopter entry. The Accutome A-Scan Plus will prompt you with the default...
  • Page 221 Performing Calculations Calculate IOL Screen and current K indexes and ask which one you want associated with the entry. Keratometer data can be entered in mm as well as diopters. The ranges for these two units are mutually exclusive. Values less than 20 are assumed to be mm, values 20 or greater as assumed to be diopters.

  • Page 222: Entering The Target Value

    0.5 D increments and centered on the result closest to the target power, is displayed for each IOL. The Accutome A-Scan Plus also provides you with a lens value for a zero target (Emmetropic). The zero target values are listed below the optimal IOL powers in...

  • Page 223: Figure 138 Calculate Iol Screen - All Fields Entered

    Performing Calculations Calculate IOL Screen Figure 138 Calculate IOL Screen - All Fields Entered...

  • Page 224: Figure 139 Compare On Selected

    Accutome A-Scan Plus User’s Guide Formula Compare Feature The Formula Compare feature allows the comparison of all formulas for each calculation. When Compare is On it displays the closest matching IOL power that will achieve the target refraction with the expected postoperative refraction as calculated by each formula.

  • Page 225: Refractive Surgery

    Performing Calculations Calculate IOL Screen Calculating The Accutome A-Scan Plus also provides the ability to IOL Power calculate IOLs for patients who have had corneal After Corneal refratcitve surgery. Refractive Surgery Corneal refractive surgery alters the characteristics and power of the cornea.

  • Page 226: Post Rx Surg Iol Calculation Steps

    The K value (corneal power or corneal curvature) for patients that have had corneal refractive surgery cannot be determined using common methods. Four K Post formulas, or methods, are available in the Accutome A- Scan Plus to determine the current corneal power for refractive patients (Kpost).
  • Page 227 Performing Calculations Calculate IOL Screen Shammas Clinical method - Calculates Kpost by adjusting on manual K reading after refractive sur- gery using simple formula Kpost = 1.14 * Kmea- sured – 6.8 Entered - The user can enter the Kpost value pre- sumably calculate using some external method.

  • Page 228: Figure 140 Post Rx Surgery Field (Rx Surg) Selected

    Accutome A-Scan Plus User’s Guide Changing Rx Surg Field to Yes *Note: The only time the Rx Surg field should be changed to yes is for a patient that has had corneal refraction surgery. In Figure 140 below the Rx Surg field is selected. To...

  • Page 229: Figure 141 Post Rx Surgery Calculation Activated - Clinical History

    Performing Calculations Calculate IOL Screen Clinical History Method When using the Clinical History method, the default and preferred method, the Calculate IOL screen displays Kpre and Kpost fields and all fields associated with the Clinical History method. Clinical History Fields When using the Clinical History method for post refractive surgery IOL calculations you must enter the value in the following fields:...

  • Page 230: Figure 142 Post Rx Surgery Calculation With Contact Lens Method

    Accutome A-Scan Plus User’s Guide Contact Lens Method The Contact Lens method requires you to enter the following fields: Kpre-the average K value before refractive surgery Current refraction in sphere and cylinder. Refraction with contact lens on in sphere and cylinder.

  • Page 231: Figure 143 Post Rx Surgery Calculation With Shammas Clinical Method

    Performing Calculations Calculate IOL Screen Shammas Clinical Method The Shammas Clinical method requires you to enter the following fields: Kpre-the average K value before refractive surgery K1 (measured)* K2 (measured)* *Measured - using a manual keratometer on the post surgery cornea refractive Rotate the knob to select each field and press the √...

  • Page 232: Calculation Results

    0.5 D increments and centered on the result closest to the target power, is displayed for each IOL. The Accutome A-Scan Plus also provides you with a lens value for a zero target (Emmetropic). The zero target values are listed below the optimal IOL powers in small numbers.

  • Page 233: Setting Up Iol Groups

    IOLs, for a system total of 45 IOLs. When you set up IOL groups you set them up in the IOL Groups Screen. The IOL Groups Screen is the only location within the Accutome A-Scan Plus for entering IOL information.

  • Page 234: Figure 144 Select Iol Groups

    Accutome A-Scan Plus User’s Guide How to Set Up The process for setting up an IOL Group consists of: an IOL Group Entering an IOL Group Name Entering lens information associated with each group All entry of IOL Groups takes place at the IOL Groups Screen.

  • Page 235: Figure 145 Iol Groups Screen

    The IOL Groups Screen as shown in Figure 145 below, displays a listing of all the IOL Groups and their associated lenses. The Accutome A-Scan Plus has a capacity to store 15 groups. The left side of the screen displays a field for the group name.

  • Page 236: Figure 146 Entering The Iol Group Name

    Accutome A-Scan Plus User’s Guide Entering IOL Group Names To enter an IOL Group Name: In the IOL Groups screen, rotate the knob to select an empty Group field. (Selection is indicated by a solid black border). You can also press the buttons beneath the "Scroll Groups Up"...

  • Page 237: Figure 147 Entering The Iol Description

    Setting Up IOL Groups How to Set Up an IOL Group Entering the Group’s Lenses To enter an IOL Group’s Lenses: Select the lens table located to the right of the Group field. (Selection is indicated by a solid black border).
  • Page 238 Accutome A-Scan Plus User’s Guide *Note: This procedure uses the A-Constant as the IOL constant. You can enter the ACD or SF as the first constant entered also. When entering a lens constant, the three constants for the Hoffer, Holladay and SRK/T are calculated if they are all empty.

  • Page 239: Figure 148 Selecting The A-Constant Field

    Setting Up IOL Groups How to Set Up an IOL Group Within the lens table, rotate the knob and select the A-Con cell. (Selection is indicated by a solid black border). Figure 148 Selecting the A-Constant Field...

  • Page 240: Figure 149 Entering The Iol Constant

    Accutome A-Scan Plus User’s Guide Enter the A-Constant for the first lens you are entering. Figure 149 Entering the IOL Constant...

  • Page 241: Figure 150 First Lens Entered For Group 1

    Setting Up IOL Groups How to Set Up an IOL Group Press the knob to save the value and to deactivate the field. The Accutome A-Scan Plus will then determine the corresponding IOL constant for each formula and automatically fill out the formula cells in the table.

  • Page 242: Figure 151 First Iol Group Complete

    Accutome A-Scan Plus User’s Guide Continue to enter all lens information for the IOL Group in the same manner. When you have com- √ pleted the table press the knob or the button, once, to save the last cell entered and then again to deactivate the table.

  • Page 243: Personalizing Lens Constants

    Personalizing Lens Constants Overview One of the great features of the Accutome A-Scan Plus is the ability to personalize the lens constants used in calculating lens power. This ability to fine tune lens constants results in even greater success for patient outcomes.

  • Page 244: Figure 152 Calculate Iol Screen - Iol Groups Selection

    Accutome A-Scan Plus User’s Guide How to The process of personalizing IOLs consists of: Personalize Selecting IOL Groups and Lenses Constants Entering Postoperative Results Updating the IOL Constants All personalization of IOL Constants takes place at the Personalize IOL Screen. The Personalize IOL Screen...

  • Page 245: Figure 153 Personalize Iols Screen

    Personalizing Lens Constants How to Personalize Constants In the IOL Groups screen press the button beneath the selection "Personalize IOLs...". The Personal- ize IOLs screen will be displayed. Figure 153 Personalize IOLs Screen...

  • Page 246: Personalize Iols Screen

    Accutome A-Scan Plus User’s Guide Personalize IOLs Screen The Personalize IOLs screen displays a group field at the top left corner and to the right of the group field is an IOL table that displays the lenses for the currently selected group.

  • Page 247: Selecting An Iol Group And Lens

    Personalizing Lens Constants How to Personalize Constants Selecting an IOL Group and Lens There are two ways to select an IOL Group and Lens: you can use the knob and first select and activate the IOL Group, and then select and activate the IOL Table, and then select and activate the IOL, or you can continuously press the button beneath the Next IOL/ Group soft menu selection.

  • Page 248: Selecting Iol Group With The Knob

    Accutome A-Scan Plus User’s Guide Selecting IOL Group with the Knob To select an IOL Group and IOL: In the Personalize IOLs screen, rotate the knob to select the IOL Group field, indicated by a solid black border. (You can also press the button beneath the selection ’Next IOL/Group’...

  • Page 249: Entering Postoperative Results

    Personalizing Lens Constants How to Personalize Constants Entering Postoperative Results Part of the process personalizing IOLs is to enter patient postoperative results so that the results can be used in calculating the new constant. It is important that as many variables of the postoperative results be kept constant;...

  • Page 250: Pasting Patient Information

    Accutome A-Scan Plus User’s Guide Pasting Patient Information When you press the button beneath the soft menu selection ’Paste Patient...’ the soft menu on the Personalize IOLs screen changes to Paste Patient selections. At any point on Personalize IOLs screen, no matter what field is active you can paste current patient info.

  • Page 251: Manually Entering Patient Information

    Personalizing Lens Constants How to Personalize Constants Manually Entering Patient Information To enter patient information manually: Rotate the knob to select the Postoperative Results table, indicated by a solid black border. √ Press the knob or the button, to activate the postoperative results table.

  • Page 252: Entering Remaining Postoperative Results

    (there should be a cell with a solid black border). Press the button beneath the selection "Delete Current Result". The Accutome A-Scan Plus will then query you "Are you sure?". Press the button beneath the selection "Yes" to continue, or press the Check √...

  • Page 253: Deleting All Postoperative Results

    This is a view option only and does not affect the averages or results in any way. How to Sort Postoperative Results The Accutome A-Scan Plus provides the ability to sort Patient records by several fields: Patient Formula & Constant The sort fields are located above the Postoperative Results table.

  • Page 254: How To Update Iol Constants

    Accutome A-Scan Plus User’s Guide To sort Postoperative results by a field: Within the Personalize IOLs Screen, rotate the knob to select a sort field, indicated by a solid black border. The A-Scan will only select the cur- rent sort field. To select another sort field you must activate the current sort field first.

  • Page 255: Figure 154 Update Iol Constants Screen

    Personalizing Lens Constants How to Personalize Constants Update IOL Constants Screen The Update IOL Constants Screen (see Figure 154 below) displays an IOL Group field in the upper left corner. Located to the right of the Group field is a table displaying the selected IOL Group’s lenses and the lenses’...

  • Page 256: Selecting An Iol Group And Lens

    Accutome A-Scan Plus User’s Guide Selecting an IOL Group and Lens Just like on the Personalize IOLs Screen, there are two ways to select an IOL Group and Lens in the Update IOL Constants Screen: you can use the knob and first select...
  • Page 257 Personalizing Lens Constants How to Personalize Constants Update Hol SF Update SRKT ACD Update Haigis a0 After pressing the button beneath the formula requiring its IOL constant to be updated, the new constant will replace the old one in the IOL table.
  • Page 258 Accutome A-Scan Plus User’s Guide...

  • Page 259: Storing And Recalling Records

    If you are away from your printer, you can save the current patient measurements and print the patient’s record at a later date. The Accutome A-Scan Plus makes storing patient records an easy process. Push the Patient Record button and the Patient Records Screen, where you can store and recall all measurement parameters and calculations, will be displayed.

  • Page 260: Figure 155 Patient Record Screen

    Accutome A-Scan Plus User’s Guide How to Store a After you have taken all the desired measurements you Record can save a Patient’s measurements to a record so that you can recall it at a later time. To save a Patient’s record: Press the "Patient Records"...

  • Page 261: Figure 156 Patient Record Stored

    Storing and Recalling Records How to Store a Record Press the button below "Save Patient". The Accu- tome A-Scan Plus will store the Patient record and indicate record storage by changing the text beside the Patient ID that the record was stored.

  • Page 262: Figure 157 Recalling A Patient Record

    Accutome A-Scan Plus User’s Guide How to Recall You may need to recall a patient record at a later date to a Record review a measurement, or execute a calculation. To recall a Patient’s record: Press the "Patient Records" button located at the right side of the instrument.

  • Page 263: Figure 158 Recalled Patient Record

    Storing and Recalling Records How to Recall a Record Press the Measure or Calculate button, located at the right side of the front panel. The A-Scan will display the recalled patient record. Figure 158 Recalled Patient Record...

  • Page 264: How To Adjust Parameters On Saved Records

    Accutome A-Scan Plus User’s Guide How to Adjust Parameters on Saved Records You can adjust any of the waveform parameters on a saved record in exactly the same manner as you would on an active waveform. To adjust parameters refer to the section "Performing Measurements"...

  • Page 265: How To Sort Patient Records

    Storing and Recalling Records How to Sort Patient Records How to Sort The Accutome A-Scan Plus provides the ability to sort Patient Patient records by several fields: Records Patient Date Saved The sort fields are located above the Patient Records.
  • Page 266 Accutome A-Scan Plus User’s Guide...

  • Page 267: Printing Records

    81/2 X 11" piece of paper. Screen Printout Formats The type of page the Accutome A-Scan Plus prints is determined by the screen from which you execute the print command.

  • Page 268: How To Select The Right Printout Format

    Accutome A-Scan Plus User’s Guide How to Select the Right Printout Format You should choose the print format according to your needs. For example, if you need to view each of the waveforms for an irregularity, you should print the Measurement printout.

  • Page 269: Figure 159 Measurement Printout

    Printing Records How to Print a Record A-Scan Plus Figure 159 Measurement Printout...

  • Page 270: Figure 160 Calculation Printout

    Accutome A-Scan Plus User’s Guide Rx Surgery: No Which Time/Date Eye Type Stamp Measurement Table Measure Settings Rx Surgery: No Eye Type Information Calculations for selected IOL Group Figure 160 Calculation Printout...

  • Page 271: Figure 161 Waveform Text Printout

    Printing Records How to Print a Record Accutome A-Scan Rx Surgery: No Rx Surgery: No Figure 161 Waveform Text Printout...

  • Page 272: Figure 162 Saved Patient Record Screen

    Accutome A-Scan Plus User’s Guide How to Batch Print The Accutome A-Scan Plus also provides a batch print capability. During a batch print you can print multiple, selected patient records using the IOL Calculation screen print format. As with direct printing, if the Serial Link is enabled on the Setup Screen, records that are batch printed will be sent out the serial link.

  • Page 273: Figure 163 Saved Patient Record - Select For Batch Print

    Continue to select all Patient records that you want to print. Press the "Print" button located at the right side of the front panel. The Accutome A-Scan Plus will print all records selected for batch print. Figure 163 Saved Patient Record - Select for Batch Print...

  • Page 274: Required Printer

    Accutome A-Scan Plus User’s Guide Required The Accutome A-Scan Plus will only print the waveforms Printer when you have a printer that uses the HP LaserJet or the HP InkJet print driver. In order to obtain the best printouts from the instrument, it is recommended that all A-Scan records be printed on a laser printer that is HP LaserJet compatible.

  • Page 275: Maintenance

    General Maintenance that should be performed on the Accutome Maintenance A-Scan Plus consists of activities such as keeping surfaces free of dust and dirt and storing in a dry and cool place so as to not adversely effect electronic parts.
  • Page 276 Accutome A-Scan Plus User’s Guide...

  • Page 277: Specifications

    Specifications Overview This section provides the physical and operational specifications of the Accutome A-Scan Plus. Physical Table 5 below lists the physical specifications of the Specifications instrument and associated peripherals. Table 5 Accutome A-Scan Plus Physical Specifications Main Unit Dimensions 30.2 X 19.05 x 4.83 cm (11.9”...
  • Page 278 8.89 X 6.60 X 2.54 cm (3.5" x 2.6" x 1") Weight 198 g (7 oz.) Environmental IP20, IP68 External Power Supply (Use only Accutome PN 24-4008) Dimensions 12.95 X 7.87 X 4.06 cm (5.1” x 3.1” x 1.6”) Weight 425 g (15 oz.)
  • Page 279 Specifications Physical Specifications Table 5 Accutome A-Scan Plus Physical Specifications Printer Connector IEEE-1284 type C Language HP Laser Jet PCL5 printer or HP Ink Jet PCL3 language Example Model HP LaserJet Model 1200 Serial Link Port Connector RS-232C, DCE, 9-pin D-Sub, female...

  • Page 280: Environmental Specifications

    Accutome A-Scan Plus User’s Guide Environmental Table 6 below lists the Accutome A-Scan Plus system Specifications operating and storage values for temperature and humidity. Table 6 Environmental Specifications Temperature Operating +10° C to +40° C Storage -20° C to +60° C...

  • Page 281: Measurement Accuracy

    Specifications Measurement Accuracy Measurement Table 7 below lists the accuracy for each type of Accuracy measurement. Clinical Accuracy (1 σ) 0.1 mm Electronic Resolution (@1550 m/s) 0.016 mm Table 7 Measurement Accuracy Clinical Accuracy (1 σ) Measurement Range Axial Length 0.1 mm 0.01 to 63.6 mm @1555 m/s...

  • Page 282: Operating Modes

    Accutome A-Scan Plus User’s Guide Operating The following table summarizes the mode/application Modes possibilities for each system/transducer combination: Table 8 Operating Mode(s) Com- Clinical Other† bined Application (Specify) (Specify) Ophthalmic Fetal Imaging & Other* Cardiac, Adult & Pediatric PeripheralVes- * Abdominal, Intraoperative, Pediatric, Small Organ (breast, thyroid, testes, etc.), Neonatal Cephalic, Adult Cephalic, Musculo-Skeletal...

  • Page 283: Formula References

    Specifications Formula References Formula Table 9 below lists the references for the calculation References formulas used in the Accutome A-Scan Plus. Table 9 Formula References Hoffer Q Hoffer Q formulas are implemented as defined in “The Hoffer Q formula: A comparison of theoretic and regres- sion formulas”, by HOFFER KJ: The Hoffer Q formula: A...

  • Page 284: Storage/Range Specifications

    Accutome A-Scan Plus User’s Guide Storage/Range Table 10 below lists the data storage and range Specifications specifications of the Accutome A-Scan Plus . Table 10 Data Specifications Stored Data Capacity Waveforms / Patient Stored Patients IOLs 45 total; 15 groups of 3 Post Operative Results 1000 total;...
  • Page 285 -3.5 to 3.5 mm Entered ACD range 0.01 mm to 9.99 mm Entered IOL a0 constant range -9.999 to 9.999 Entered IOL a1 constant range -0.999 to 0.999 Entered IOL a2 constant range -0.999 to 0.999 Accutome Clock Clock/calendar valid Through year 2099...

  • Page 286: Acoustic Output

    Accutome A-Scan Plus User’s Guide Acoustic Table 11 below provides the acoustic output reporting for Output the following: Transducer Model: Accutome A-Scan Operating Mode: A-Scan Application(s): Ophthalmic Table 11 Acoustic Output Reporting Table for Track 1 Non-Autoscanning Mode Acoustic SPTA.3 SPPA.3...
  • Page 287 Specifications Acoustic Output Table 11 Acoustic Output Reporting Table for Track 1 Non-Autoscanning Mode Control 1 Control 2 Operat- Control 3 ing Con- trol Control 4 Condi- Control n tions These values are based on measurements of production units. The “derated” intensity calculations are based on the measured center frequency of the acoustic signal (f , MHz) and the distance from the transducer under test to the hydrophone (z, cm) using the derating...
  • Page 288 Accutome A-Scan Plus User’s Guide...

  • Page 289: Warranty & Repairs

    Warranty & Repairs Warranty Accutome, Inc. warrants its new equipment to be free from defects in workmanship or materials. Any product that is proven to be defective will be repaired or replaced at our discretion, free of charge, up to one year from the date of purchase by the initial user of the equipment from Accutome, Inc.

  • Page 290: Product Returns

    Follow the instructions given below to return products to Returns Accutome Inc. Service and Repair Before returning instruments for service or repair, contact the Accutome Technical Service Group for a Return Goods Authorization (RGA) number. Toll Free (in USA): 1-800-979-2020 Tech Service:...

  • Page 291: Replacement Parts

    Replacement Table 12 below lists items that are available from Parts Accutome, Inc. or from your local sales representative. Please be sure to use the Accutome part number for the item when placing an order. Table 12 Accutome Replacement Parts Description Accutome Part No.
  • Page 292 Accutome A-Scan Plus User’s Guide...

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