Sphere: | -19.00~+16.75m-1 Step:0.25m-1\3.00m-1 |
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Cylinder: | 0.00~-6.00m-1 |
Cylinder Axial: | 0~180° Step:5° |
Cross Cylinder: | ±.25m-1 |
Rotating Prism: | 0~20 Step:1 |
Distance of Optical Center: | 50~75mm Step:1mm |
Customization: |
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Technical Parameters | ||||||||||||||||||||||||||||
Features 1, contour design elegant. 2, with Sphere fast rotating disk, enabling the rapid adjustment of 3.00m-1. 3, the unique Cross Cylinder design, convenient and flexible. 4, can be easily used to measure near visual acuity. |
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