light adaptation

noun Ophthalmology.

the reflex adaptation of the eye to bright light, consisting of an increase in the number of functioning cones, accompanied by a decrease in the number of functioning rods (opposed to dark adaptation).

Origin of light adaptation

First recorded in 1895–1900

Related forms

light-a·dapt·ed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for light adaptation

light adaptation


The adjustment of the eye under increased illumination, in which the sensitivity to light is reduced.photopic adaptation
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.