phoro-optometer

[fôr′ō-ŏp-tŏmĭ-tər]

n.

An instrument for determining phorias, ductions, and refractive states of the eyes.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.