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12-6
Performance Verification Check
2660021169012 Rev. A 2017-12
Performance Verification Check
With the Performance Verification Check, you can verify that the fundus image of the
CIRRUS HD-OCT instrument and the OCT scan image overlay are aligned within
specifications as defined by the target inside the Verification Test Tool. Practically, this
means the scan actually is placed where it appears to be placed, based on the fundus
image. You can re–try the check if it does not pass initially.
NOTE: If a performance verification check fails, the data acquired since the last successful
check may not be reliable.
• Frequency: Weekly, or at the beginning of each week you will acquire new scans.
• Time Required for Test: Approximately 2 minutes.
• Verification Test Tool Required: Zeiss provides this tool with each instrument. It
contains fragile parts that must be maintained in their original position for the test
measurements to be accurate.
CAUTION: Handle the Verification Test Tool carefully to avoid dropping. Damage to the
Verification Test Tool can affect test results. If you drop the tool, it is recommended that you
do not use it for testing. Immediately contact Zeiss customer service. In the U.S., call 800–
341–6968. Outside the U.S., contact your local Zeiss distributor.
Install the Verification Test Tool
Install the Verification Test Tool in the correct orientation. The tool has short pegs at upper
left and lower right, and thumbscrews at upper right and lower left. Each of these
corresponds to a hole on the face of the ocular lens housing.
Using only your fingers, turn the screws (clockwise) on top and bottom to secure the tool in
place. To avoid dropping the tool, make sure that both screws are tight before releasing the
tool.
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CIRRUS HD-OCT User Manual
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Table of Contents
Troubleshooting
Need help?
Do you have a question about the CIRRUS HD-OCT 500 and is the answer not in the manual?
Questions and answers
How do I measure the center thickness on OCTA on Zeiss 5000?
The Zeiss CIRRUS HD-OCT 500 measures central corneal thickness (CCT) using OCT imaging. The device provides pachymetry scans for this purpose. To measure CCT:
1. Use the Pachymetry Scan mode available on the CIRRUS HD-OCT 500.
2. Ensure proper alignment by centering the scan lines correctly.
3. Follow the on-screen instructions to capture the scan.
4. The device will generate a measurement, which may differ slightly from ultrasound pachymetry.
OCT devices generally measure thinner than ultrasound pachymetry, with a reported mean difference of approximately -9.06 μm.
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How do you back up to an external hard drive? Need detailed answer please as I **** computer illerate. We have the Zeiss Cirrus HD 4000?
The manual does not explicitly describe the process of backing up data from the Zeiss Cirrus HD-OCT 500 to an external hard drive. However, it does mention archiving data to a network-attached storage device or keeping paper records as a backup. It also provides instructions for exporting audit log files, which may be useful for data backup. To export audit log files:
1. Log on as an administrator.
2. Click Tools > Export Audit Log File.
3. In the Browse For Folder window, select the destination folder on the external hard drive.
4. Click Save to export the log as a .zip file.
For a full data backup, it is recommended to consult Zeiss service personnel for proper procedures.
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Does this machine have a way to test for Dense Cataracts