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light adaptation
light ad·ap·ta·tion or light ad·ap·tion


noun 
Definition:
 
eye changes permitting vision in light: the rapid changes that occur in the eye to permit vision when moving from darkness to light. The pupil constricts and the retina is bleached of visual pigment, making it less sensitive to light.
[<light1]

light-a·dapt·ed adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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