Tigers can see 6 times better at night than humans.
305
Only about 2% of the world population has green eyes.
36
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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Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sheep, goats, octopuses, and toads have rectangular pupils.
7
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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