Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The colossal squid has the largest eyes in the world.
4
Only about 2% of the world population has green eyes.
36
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
The human eye blinks an average of 4,200,000 times a year.
233