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Feature:
Top-grade quality View Tester;
Elegant design of butterfly-shape appearance;
High grade plated-film used in all optic lenses;
Two colors for option.
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| Technical Data | |
| Sphere powers range | ±16.75Dto-19.00D,with minimum reading 0.25D or 0.12D |
| (when+0.12D auxiliary lens or optional±0.12D lens is in use) | |
| Cylinder powers range | 0 to-6.00D,with minimum reading 0.25Dor0.12D |
| ( when auxiliary lens is in use) 0 to-8.00D | |
| ( when-2.00D auxiliary lens is in use) | |
| Astigmatic axis scale | 0 to 180°in 5°steps |
| Cross Cylinder | reversal type (synchronized with astigmatic axis) ±0.25D,or±0.50D |
| Rotary prism | 0 to20△D in 1△D steps |
| P.D. adjustment | 48-80mm;Step:1mm |
| Forehead reat adjustment | 16mm forward and backward |
| Convergence | The optical axes og thelenses are aligned at a diatance of 400mm from the vertexes of the corneas (2mm each for right and left inward)Interpupillary distance enabling convergence=57mm to 80mm |
| Corneal distance device | 2mm forward and 5mm backward from standard plane;with scale |
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