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light adaptation

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light adaptation

 
Use light adaptation in a Sentence
–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:
1895–1900

Related forms:
light-a⋅dapt⋅ed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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light adaptation  
n.  The process, chiefly involving constriction of the pupil, by which the eye adapts to an increase in illumination.
light'-a·dapt'ed (līt'ə-dāp'tĭd) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: light adaptation
Function: noun
: the adjustments including narrowing of the pupillary opening and decrease in rhodopsin by which the retina of the eye ismade efficient as a visual receptor under conditions of strong illumination —compare DARK ADAPTATION —light–adapt·ed /'lIt-&-"dap-t&d/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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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