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Indian Scientific Instrument

A Phoropter

Home > Ophthalmology Instruments > A Phoropter

A most common ophthalmology instrument, Phoropter is used for examining the eye and measuring its refractive errors. The results received by a phoropter are given in the form of minus (-) or plus (+) numbers that signify the power lenses required for distant vision and nearer (reading) vision, respectively. This eye instrument contains a number of lenses, which makes it easier for the practitioner to change the lens power and determine the exact power with which the person sees clearly.
  • Phoroptor is registered trademark, owned by Reichert Technologies
  • Its common name is refractor
  • Present version is called "Ultramatic RX Master Phoroptor"

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