Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The colossal squid has the largest eyes in the world.
4
If the human eye was a digital camera, it would have 576 megapixels.
25
Only about 2% of the world population has green eyes.
36
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
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 human eye blinks an average of 4,200,000 times a year.
233
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75