Mystery Eyes?

Looking over a prolonged period on a bright colour, in this case violet, it will "imprint" on our retina creating the opposite colour, in this case green. So constant staring at the same spot will superimpose the green colour which had already been "imprinted" on our retina and causing green & violet to "combine" giving us full colour, which is white. However, it appears grey because it is intensity difference only, between white and grey...

Cool..... If you continue to focus on the cross in the center of the image you will notice that ....

the circle of violet circles will soon DISAPPEAR completely .. and you will see only the green spot (which is actually violet)

**Actually violet is the almost "opposite" colour of green.

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