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Say, your eye itches, so you might rub it... Why is it that when you're done rubbing your eye then you open it, you see black and then in a second you don't?
It has to do with the pressure on the retina.
**caused by stimulation of the back of the eye, or the optic nerve, which transmits the experience of light to the brain. As a child, you may remember surreptitiously pressing on your closed eyelids and watching the undulating patterns of light projected into that hot, dark field.
Pressure and stimulation can trick the brain into seeing flashes as well, and most of these visions are common and harmless.**
**Source Citation : ScienceLine http://scienceline.org/2008/04/14/ask-ashford-flashes/
something to do with the pupil reacting to light after it's been rubbed hard? is that it?
no like, you see black right when you open it
da your eyes are closed
probably