Nidek Medical RT-5100, Руководство оператора

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186
TEST METHOD Binocular Visual Function Test
5
Ask the patient, “Is the cross shifted upward or downward?”
Upward

Left eye hyperphoria
Downward

Right eye hyperphoria
The cross is in the center.

No vertical phoria
When the cross is shifted from the center, correct it as follows:
Appearance of
chart
Phoria Correction
<1> The cross is
shifted to the right.
Esophoria
Turn the dial clockwise to add the BO prism powers until
the cross comes to the center of the circle.
<2> The cross is
shifted to the left.
Exophoria
Turn the dial counterclockwise to add the BI prism
powers until the cross comes to the center of the circle.
<3> The cross is
shifted upward.
Left eye
hyperphoria
Press . Turn the dial clockwise until the cross
comes to the center of the circle. (Add BU to the right eye
and BD to the left eye.)
<4> The cross is
shifted downward.
Right eye
hyperphoria
Press . Turn the dial counterclockwise until the
cross comes to the center of the circle. (Add BD to the
right eye and BU to the left eye.)
• The rotary prism lenses are removed from the measuring windows when the already
selected button is pressed again in prism mode.
ex.When is pressed in the base in/out prism, the rotary prism lenses are removed.
• Use or instead of the dial for fine adjustment.
• When adding the prism power, the prism power can be added in 0.5 D increments by adding
the prism power for single-eye compared to both eyes.
Dial 1.0

0.5

,
0.2

0.1

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Uncontrolled copy when printed.