In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Tigers can see 6 times better at night than humans.
305
If the human eye was a digital camera, it would have 576 megapixels.
25
The human eye blinks an average of 4,200,000 times a year.
233
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132