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
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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Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
Poor eyesight (myopia) is associated with higher IQ.
232
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266