Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The colossal squid has the largest eyes in the world.
4
Only about 2% of the world population has green eyes.
36
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
If the human eye was a digital camera, it would have 576 megapixels.
25
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Poor eyesight (myopia) is associated with higher IQ.
232