Digital Refractor CDR-9000 181
1. To enter this mode, press the Polarized Cross Chart. Alternately, press the
[TEST] button and then select “Pola Cross w/ Fix” Item of the touch screen
to execute this test.
2. Ask the patient as follows; “Can you see one ideal cross mark?”
3. If “Yes”, the patient has no phoria and all done. If “No”, the patient has p
horia and continue the test.
4. At firsthand, ask the patient to measure the horizontal phoria as follows;
“Is the “┗” shape to the left of the “┓” shape or to the right of it?”
5. If “Right”, esophoria. Turn the dial clockwise to add the BO prism till they
form a cross mark.
6. If “Left”, exophoria. Turn the dial counterclockwise to add the BI prism till
they form a cross mark.
7. At secondhand, Press the [BDBU] button and ask the patient to measure t
he vertical phoria as follows; “Which shape is higher, “┓” or “┗” ?”
8. If “┗” shape : left eye with hyperphoria. Turn the dial clockwise to add th
e BU prism till they form a cross mark.
9. If “┓” shape : right eye with hyperphoria. Turn the dial counterclockwise t
o add the BD prism till they form a cross mark.
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