- the normal refractive condition of the eye, in which the rays of light are accurately focused on the retina.
Origin of emmetropia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the normal condition of perfect vision, in which parallel light rays are focused on the retina without the need for accommodation
C19: from New Latin, from Greek emmetros in due measure + -opia
- The condition of the normal eye when parallel rays are focused exactly on the retina and vision is perfect.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.