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Adaptation is..
  • A
    the adjustment of the eyes to high or low levels of illumination.
  • B
    the reflection of the light at the cornea.
  • C
    the change of the diameter of the pupil.
  • D
    the adjustment of the crystalline lens to focus light on the retina.
Adaptation is the term used to describe the way in which the eyes cope when changing between brightness and darkness. Adaptation is performed separately by each eye.


Light Adaptation. When experiencing sudden high levels of illumination the eye quickly adjusts - approximately 10 seconds. 

Dark Adaptation. It takes about 7 minutes for the cones and 30 minutes for the rods for our eyes to adapt to darkness.

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