When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Poor eyesight (myopia) is associated with higher IQ.
232
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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The human eye blinks an average of 4,200,000 times a year.
233
The colossal squid has the largest eyes in the world.
4