Nidek Medical RT-5100 Operator's Manual page 200

TEST METHOD Binocular Visual Function Test
 Vertical phoria correction
1
Present the vertical coincidence chart.
Press
The polarizing filters are placed in the measuring windows. (The red and green filters are
placed for the SC-2000, SC-1600.)
The base up/down prism powers can be entered.
2
Ask the patient, "Can you see a square with a dot in the center? Are the left and right
frames aligned? Or, is one higher than the other?"
When they are not aligned, correct them as follows:
<1> The left frame
is higher.
<2> The right frame
is higher.
182
.
Appearance of
chart
Right eye
hyperphoria
hyperphoria
• The rotary prism lenses are removed from the measuring windows when the already
selected button is pressed again in prism mode.
ex.When
• Use or
• When the prism power is added, the prism power can be added in 0.5 D increments by
adding the prism power for single-eye compared to both eyes.
Dial
,
Phoria
Press
and right frames are aligned.
(Add BD to the right eye and BU to the left eye.)
Press
Left eye
right frames are aligned.
(Add BU to the right eye and BD to the left eye.)
is pressed in the base up/down prism, the rotary prism lenses are removed.
instead of the dial for fine adjustment.
1.0 0.5
0.20.1
161221687130 承認済
Correction
. Turn the dial counterclockwise until the left
. Turn the dial clockwise until the left and