light adaptation

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adaptation

 [ad″ap-ta´shun]
1. a dynamic, ongoing, life-sustaining process by which living organisms adjust to environmental changes.
2. adjustment of the pupil to light.
biological adaptation the adaptation of living things to environmental factors for the ultimate purpose of survival, reproduction, and an optimal level of functioning.
color adaptation
1. changes in visual perception of color with prolonged stimulation.
2. adjustment of vision to degree of brightness or color tone of illumination.
dark adaptation adaptation of the eye to vision in the dark or in reduced illumination.
light adaptation adaptation of the eye to vision in the sunlight or in bright illumination (photopia), with reduction in the concentration of the photosensitive pigments of the eye.
physiological adaptation the ongoing process by which internal body functions are regulated and adjusted to maintain homeostasis in the internal environment.
psychological adaptation the ongoing process, anchored in the emotions and intellect, by which humans sustain a balance in their mental and emotional states of being and in their interactions with their social and cultural environments.
social adaptation adjustment and adaptation of humans to other individuals and community groups working together for a common purpose.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

light ad·ap·ta·tion

the visual adjustment occurring under increased illumination in which the retinal sensitivity to light is reduced.
See also: light-adapted eye, Purkinje shift.
Synonym(s): photopic adaptation
Farlex Partner Medical Dictionary © Farlex 2012

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 (-ə-dăp′tĭd) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

light ad·ap·ta·tion

(līt ad'ap-tā'shŭn)
The visual adjustment occurring under increased illumination in which the retinal sensitivity to light is reduced.
See also: light-adapted eye
Synonym(s): photopic adaptation.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012