When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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Poor eyesight (myopia) is associated with higher IQ.
232
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The colossal squid has the largest eyes in the world.
4
Only about 2% of the world population has green eyes.
36
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21