Digital Refractor CDR-9000 123
12.1.3. Jackson Cross Cylinder Test(CYL) for Right Eye
The third step is to calibrate the CYL value for the right eye minutely on the b
ase of the resultant SPH-CYL-AXIS values from step 1. Press the [1]/[2] buttons
that toggles the lens flipping during Jackson Cross Cylinder Test, and ask whic
h status appears clearer. If , turn the dial to the ‘+’ direction (counter-clockw
ise) and if , to the ‘-’ direction (clockwise). Repeat this procedure until the p
atient sees and even. See 13.12, Jackson Cross Cylinder Test.
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