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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
Related forms
light-adapted, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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light-adaptation in Medicine

light adaptation n.
The adjustment of the eye under increased illumination, in which the sensitivity to light is reduced. Also called photopic adaptation.

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