Features:

- This product is used to detect ocular ametropia and visual function.
- This product is mainly composed of the inspection disc, the adjusting part, the lens, the measuring scale and so on. The inspection disc is composed of a built-in multi disk mechanism consisting of a ball lens, a column lens, and a lens.
- The product is used for myopia, hyperopia, astigmatism, astigmatism axis, eye balance and presbyopia detection, optometry convenient, intuitive and accurate.

Specification:

Sphere degree range：0D ~  16.75D, Step: 0.25D
                                     -19.00 ~ 0D, Step: 0.25D
Cylinder degree range：-0.25D to -6.00D, Step: 0.25D

Astigmatic axis scale：0 to 180°, Steps: 5°

Cross cylinder：±0.25D, also can choose ±0.5D, Reversal type (synchronized with astigmatic axis)

P.D. adjustment：50-80mm

Fixed-point distance adjustment range：0-13mm

Effective field of view：19mm

Weight：5kg

What in Package:
1  X   VT-5C Manual Phoroptor Refractor