Before revision: It is commonly used by eye care professionals during an eye examination, and contains different lenses used for refraction of the eye during sight testing, to measure an individual's refractive error and determine his or her eyeglass prescription.Dictionary.com, Definition of "phoropter", American Heritage Stedman's Medical Dictionary.
After revision: It is commonly used by eye care professionals during an eye examination, and contains different lenses used for refraction of the eye during sight testing, to measure an individual's refractive error and determine their eyeglass prescription.Dictionary.com, Definition of "phoropter", American Heritage Stedman's Medical Dictionary.