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Question
Adaptation of eye in dark occurs due to
Adaptation of eye in dark occurs due to
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Solution
The correct option is C Repletion of visual pigments in rods
Dark adaptation is adjustment from light to dark. Dark
adaptation is due to the presence of rods. It occurs when there is a change in
the intensity levels of the light. As soon as the eyes are exposed to darkness,
cones cease to function. The rod pigments bleach out due to bright light so it
is nonfunctional initially. In the dark, rhodopsin pigment (found in the rods) regenerates and the
sensitivity of the retina begins to increase with time.
Dark adaptation is adjustment from light to dark. Dark adaptation is due to the presence of rods. It occurs when there is a change in the intensity levels of the light. As soon as the eyes are exposed to darkness, cones cease to function. The rod pigments bleach out due to bright light so it is nonfunctional initially. In the dark, rhodopsin pigment (found in the rods) regenerates and the sensitivity of the retina begins to increase with time.
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