The colossal squid has the largest eyes in the world.
4
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
Tigers can see 6 times better at night than humans.
305
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The human eye blinks an average of 4,200,000 times a year.
233