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