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Anonymous
>>446535
The dye in your eye is called "visual purple"
It takes a period of time to regenerate after it gets bleached out, this is what causes afterimages of bright lights.
This .gif causes the visual purple to leach in a series of dots while you stare at the cross. As the visual purple starts to fail, the brain patches in the opposite color, making it green.
Eventually, the visual purple is all gone, leaving you with literal holes in your visual field. The brain hates that, so it"covers over" the holes, thus the disappear.
Learn some physiology folks, this is just how the body works.
http://en.wikipedia.org/wiki/Rhodopsin
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