why do your eyes react quickly to light but slowly to a lack of light?

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why do your eyes react quickly to light but slowly to a lack of light?

In: Biology

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Anonymous 0 Comments

This is because response to sudden brightness is pupil contraction, which takes a few seconds to a minute, but adjustments to darkness require the pupils to expand (which also only takes a short time), with the additional process of “waking up” our eyes low light sensors, the rods. This waking up process is what takes longer.

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