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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
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
Sheep, goats, octopuses, and toads have rectangular pupils.
7