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.
22
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Only about 2% of the world population has green eyes.
36
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
The colossal squid has the largest eyes in the world.
4
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