27 Cool And Amazing Facts About Human Eyes

Human eye is a miracle of nature’s engineering, in the way it works and what it does for us. The eyes are truly amazing pieces of machinery!

Did you know that the cornea in your eye is the only organ in your body without a blood supply? It takes oxygen directly from the air!

For more cool facts about human eyes, check out below!

If you lined up all the eyelashes shed during one human life, they would measure 98 feet long. Colour blindness is more common in males. Heterochromia refers to a condition where eyes are two different colours. Diabetes is the number one cause of blindness in adults in the UK. During a sight test, health conditions including diabetes and high blood pressure can be detected. People generally read 25% slower on screen than on paper. Everyone has one eye that is slightly stronger than the other. Only one sixth of the human eyeball is exposed. The muscles in the eye are 100 times stronger than they need to be to perform their function. 80% of vision impairment worldwide is curable. Oily fish, vitamin A and vitamin C can all help to preserve good eyesight. Your eyes can detect a candle flame 1.7 miles away. Your eyes focus on 50 different objects every second. 80% of what we learn is through our eyes. Eyes are the second most complex organ after the brain. An eye cannot be transplanted. More than 1 million nerve fibers connect each eye to the brain and currently we're not able to reconstruct those connections. An eye is composed of more than 2 million working parts. Eyes began to develop 550 million years ago. The simplest eyes were patches of photoreceptor protein in single-celled animals. Eyes heal quickly. With proper care, it takes only about 48 hours to repair a minor corneal scratch. If the human eye was a digital camera, it would have 576 megapixels. Red-eye in photos is caused by light from the flash bouncing off the capillaries in your eyes. In a single second, it's possible to blink five times. Brown eyes are blue eyes underneath. Consequently, a person can receive surgery in order to make their brown eyes blue. Blue eyes are the most sensitive to light, dark brown the least sensitive. It's impossible to sneeze with your eyes open. Your eyes are constantly moving, usually in rapid jerky movements. But your brain has a kind of ‘steadycam’ feature which makes your vision seem to be stable.
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