Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If the human eye was a digital camera, it would have 576 megapixels.
25
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
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The colossal squid has the largest eyes in the world.
4
Sheep, goats, octopuses, and toads have rectangular pupils.
7