Stare at the dots for 30 seconds, then look at a white background (ceiling, wall) for 20-30 seconds without blinking. What do you see?
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Stare at the dots for 30 seconds, then look at a white background (ceiling, wall) for 20-30 seconds without blinking. What do you see?
Blurred vision.
Cool....
Wow!!
White dot, try it again when the sun is up.