The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Poor eyesight (myopia) is associated with higher IQ.
232
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
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
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
If the human eye was a digital camera, it would have 576 megapixels.
25
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269