If the human eye was a digital camera, it would have 576 megapixels.
25
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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There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Tigers can see 6 times better at night than humans.
305
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
Poor eyesight (myopia) is associated with higher IQ.
232
There's a woman named Veronica Seider who had vision 20x better than average. She could identify people more than a mile (1.6km) away.
22