Digital Refractor CDR-9000 175
T] button and then select “Hor. Conincidens” Item of the touch screen to
execute this test.
2. Ask the patient as follows; “Can you see a square with a point at the cen
ter?” “Are the right and left sides of the upper and lower frames aligned
with each other?”
3. If the upper one is to the right of the lower one: esophoria. Turn the dial
clockwise to add the BO prism till the two frames are aligned.
4. If the upper one is left of the lower one: exophoria. Turn the dial counter
clockwise to add the BI prism till the two rods are aligned.
5. If you are satisfied with the test result, press the [OK] button of the touch
screen to save (each results of phoria test is maintained separately) or th
e [CANCEL] button of the touch screen to discard the result.
6. Continue this test by asking the following question if necessary. “Can you
see the frames with a point at the center?”, “Are the two frames of the sa
me size or not?” (One line equals to about 3.5% aniseikonia)
7. If “Yes”, the patient has no aniseikonia. Press the [OK] button of the touch
screen to select OK. If “No”, the patient has aniseikonia. Press the [NG] b
utton of the touch screen to select NG.
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