The colossal squid has the largest eyes in the world.
4
The human eye blinks an average of 4,200,000 times a year.
233
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Only about 2% of the world population has green eyes.
36
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Sheep, goats, octopuses, and toads have rectangular pupils.
7