Provides highly accurate readings over a wide range. Fast, accurate readings on Binocular Visual Balance. Offers fast astigmatism tests.

Specifications:
Sphere Power Range: +16.75 to –19.00D, with a min. reading 0.25D or 0.12D
Cylinder Power Range: 0 to –6.00 with min. reading 0.25D to 0.12D
Astigmatic Axis Scale: 0º to 180º in 5º steps
Cross Cylinder: ±0.25, reversal type
Rotary Prism: 0 to –20∆D, in 1∆D step
Inter-Pupillary Adjustment: 48-80mm in 1mm step
Effective Field of View: 19mm
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Model: HR-20.5P
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