factory price hot selling medical optical instrument hand auto portable refractometers

Phoropter inspection instrument is commonly used in ophthalmology. It is mainly used for refraction, As a basic tool of ophthalmology and visual inspection workers, it plays an irreplaceable role. Phoropter we produce is an improvement to the conventional optometry  instrument, and almost all lenses in the ordinary lens box are  loaded into the runner system, So in the operation it provides a more effective, faster conversion lens may than the use of test frame optometry, Through simple knobs and we soon conversion and find the required lens, especially suitable for the complicated subjective optometry; and because all optometry instrument lenses are in a closed state, so the workers needn’t worry about staining lenses, it use more conveniently with higher accurate rate.