The human eye blinks an average of 4,200,000 times a year.
233
Only about 2% of the world population has green eyes.
36
Sheep, goats, octopuses, and toads have rectangular pupils.
7
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
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132