VT-50 White Phoropter Refractor Vision Tester

Features 1. Classic appearance, professional technology, precise measurement, easy and convenient operating, and best price value2. All the lens are anti-reflection coated.3. Clear scale, convenient and durable operating4. New leveling mechanism5. Clear scale, convenient and durable operating6. With synthetic and overall inspecting functions on eyesight7. Wide range of auxiliary lens combinations8. Precision machined to finest tolerances9. This is suitable for eyesight examination in spectacles shops, department of ophthalmology in hospitals, schools10. Color available in black and white Specifications 1. Sphere power Range: +16.75D to-19.00D, with minimum reading 0.25D or 0.12D(when+0.12D auxillary lens or optional ±0. 12D lens in use)+26.75D to-29.00D(when optional ±10.00D lens is in use) 2. Cylinder power range: 0 to-6.00D, with minimum reading 0.25D or 0.12D(when auxiliary lens is in use)0 to-8.00D(when-2.00D auxiliary lens is in use) 3. Astigmatic axis scale: 0 to 180° in 5°steps