Huvitz CDR-9000 - Cylinder Axis Test

148 Digital Refractor CDR-9000
13.9. Cylinder Axis Test
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Objective: To obtain maximum corrected monocular CYL value during the subj
ective test using the Clock Dial chart by 30˚steps.
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Chart: Clock Dial chart
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Auxiliary Lens: None
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Expectation: All the rods on the screen can be seen uniformly clear.
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Operation Sequence:
1. Press the Clock Dial chart to change into astigmatism. Alternately, press th