dark adaptation
nounOphthalmology.
the reflex adaptation of the eye to dim light, consisting of a dilatation of the pupil and an increase in the number of functioning rods accompanied by a decrease in the number of functioning cones (opposed to light adaptation).
Origin of dark adaptation
1First recorded in 1905–10
Other words from dark adaptation
- dark-a·dapt·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use dark adaptation in a sentence
To come now to the sense of sight, we have light adaptation, dark adaptation, and color adaptation.
Psychology | Robert S. Woodworthdark adaptation is equivalent to sensitizing the retina for faint light.
Psychology | Robert S. Woodworth
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