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light adaptation

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noun Ophthalmology.
  1. 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 formslight-a·dapt·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
light adaptation in Medicine

light adaptation

n.
  1. 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.