The human eye blinks an average of 4,200,000 times a year.
233
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
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
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
The colossal squid has the largest eyes in the world.
4
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Tigers can see 6 times better at night than humans.
305