Definitions for dark adaptation

This page provides all possible meanings and translations of the word dark adaptation

Random House Webster's College Dictionary

dark′ adapta`tion(n.)

  1. the reflex adjustment of the eye to dim light or darkness, consisting of a dilation of the pupil, an increase in the number of functioning rods, and a decrease in the number of functioning cones.

    Category: Ophthalmology

Origin of dark adaptation:



Princeton's WordNet

  1. dark adaptation(noun)

    the process of adjusting the eyes to low levels of illumination; cones adapt first; rods continue to adapt for up to four hours

U.S. National Library of Medicine

  1. Dark Adaptation

    Adjustment of the eyes under conditions of low light. The sensitivity of the eye to light is increased during dark adaptation.


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