1-Eyes are thought to have first developed in animals, in a very basic form, around 550 million years ago.
2-The world’s most common eye colour is brown.
3-Your eye is the fastest muscle in your body – hence why when something happens quickly, we say ‘in the blink of an eye!
4-You see with your brain, not your eyes. Our eyes function like a camera, capturing light and sending data back to the brain.
5-Dogs can’t distinguish between red and green.
6-We have two eyeballs in order to give us depth perception – comparing two images allows us to determine how far away an object is from us.
7-Eye colour is determined by the amount of melanin in your iris.
8-20/20 vision simply means that you have normal1 vision.
9-Your eyes become tired when you read or stare at a computer, this is because you blink less often.
10-Although our nose and ears keep growing throughout our lives, our eyes remain the same size from birth
11-You blink more when you talk.
12-Diabetes is the number one cause of blindness in adults in the UK.
13-People generally read 25 times slower on screen than on paper.
14-All babies are colour blind at birth.
15-The first blue-eyed person is said to have lived 6,000-10,000 years ago.
16-It’s impossible to sneeze with your eyes open.
17-An ostrich’s eye is bigger than its brain.
18-The human eye can see 500 shades of grey
19-You blink on average 4,200,000 times a year.
20-The cornea is the only tissue in the human body which doesn’t contain blood vessels.
21-The human eye can function at 100% at any given moment, without needing to rest.
22-Smoking reduces your night vision.
Read More: eyecare.lenstore.co.uk/101-amazing-eye-facts
Source: Light’s Odyssey: How You See The Cosmos by Lenstore