Sheep, goats, octopuses, and toads have rectangular pupils.
7
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
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.
21
If the human eye was a digital camera, it would have 576 megapixels.
25
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
There's a woman named Veronica Seider who had vision 20x better than average. She could identify people more than a mile (1.6km) away.
22