A member asked:

If my bedroom is brightly lit before bed time, it's hard to fall asleep... is it because the eyes sense light, or is it skin sensing light, or both?

A doctor has provided 1 answer

Brain: The light passes through the retina into a part of the hypothalamus which is the area of the brain that controls several sleep activities and delay the release of the sleep-inducing hormone, melatonin.

Answered 2/24/2019

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