DETAILS
Specification：
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)+26.75D to－29.00D (When optional ±10.00D 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 | ±0.25D，reversal type（synchronized with astigmatic axis） | |
Rotary prism | 0 to20△D in 1△D steps | |
