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
Only about 2% of the world population has green eyes.
36
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
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
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