What are some examples of optometry equipment?

Some examples of optometry equipment include the keratometer, phoroptor and chart projector. These instruments are used by optometrists and ophthalmologists to diagnose certain eye conditions and test vision.

A keratometer, also known as an ophthalmometer, measures the curvature of the eye's cornea. This optical device diagnoses the presence of astigmatism and sometimes assists in performing surgical procedures. An optometrist uses a phoroptor to test an individual's vision. Specifically, different lenses measure an individual's refractive error, which determines her eyeglass prescription. A chart projector projects symbols and letters for individuals to read through a series of lenses during an eye examination.