If the human eye was a digital camera, it would have 576 megapixels.
25
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266