A member asked:

When you close your eyes, what is it that you see drift across the blackness?

A doctor has provided 1 answer
Dr. Tim Conrad answered

Specializes in Ophthalmology

Afterimage: You are describing an afterimage. This is caused by the biochemical change in the retinal cells when the amount of light changes suddenly.

Answered 1/21/2014

4.6k views

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