Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The human eye blinks an average of 4,200,000 times a year.
233
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Poor eyesight (myopia) is associated with higher IQ.
232
Only about 2% of the world population has green eyes.
36