Nidek Medical RT-5100, Руководство оператора

Страница: 211 / 306

193
TEST METHOD Binocular Visual Function Test
4
4.4.16 Pointer test
Use: To measure cyclophoria
Chart: Pointer
Applicable model: SC Pola G+
Auxiliary lens: Right eye 135º, left eye 45º, polarizing filters
Ideal appearance:
Right eye Left eye Binocular ideal
(No fixation disparity)
1
Present the pointer chart.
Press .
The polarizing filters are set in the measuring windows.
2
Ask the patient, “Can you see the upper and lower hands and scales?”
Yes
Ѝ
Testing can be continued.
No
Ѝ
Testing cannot be continued.
3
Ask the patient, “Do the upper and lower hands point to the middle of the scale?”
Yes
Ѝ
No fixation disparity
No
Ѝ
Phoria. Continue testing.
4
Ask the patient, “Are the upper and lower hands at an angle?”
Yes
Ѝ
Functional cyclophoria or optical cyclophoria
No
Ѝ
Esophoria or Exophoria
Appearance of
chart
Phoria Correction
Hands at an angle
Functional
cyclophoria or
optical cyclophoria
Functional cyclophoria or optical cyclophoria
is suspected but further examination cannot
be performed in this testing.
Hands shifted to right
Esophoria
Turn the dial clockwise until the hands point
to the middle of the scale to add the BO
prism powers.
Hands shifted to left
Exophoria
Turn the dial counterclockwise until the
hands point to the middle of the scale to add
the BI prism powers.
161221687130 承認済
Uncontrolled copy when printed.