Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Poor eyesight (myopia) is associated with higher IQ.
232
Only about 2% of the world population has green eyes.
36
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Tigers can see 6 times better at night than humans.
305
The human eye blinks an average of 4,200,000 times a year.
233