25 Extraordinary facts about human Eyes

Eyes are one of the most complex and fascinating organs in the human body. Here are some Astonishing facts about human eyes you may enjoy.


eyes

  1. If the human eye was a digital camera it would have 576 megapixels.
  2. The average blink lasts for about 1/10th of a second.
  3. In an average lifetime, eyes see 24 million different images.
  4. Your eyes are about 2.5 cm across and weight about 8 grammes.
  5. Your eyeball is about 1 inch across. It is soft like jelly. Inside your eyes are blood vessels.
  6. The eyes on average blink 17 times per minute, 14,280 times per day, and 5.2 million times per year.
  7. Blinking cleans the eyes and removes dust. When you blink, a thin layer of tears coats the eyes.
  8. The pupil of your eye expands as much as 45% when you look at someone you love.
  9. The human eye, an incredible organ, can distinguish about 10 million different colors.
  10. Human corneas are so similar to shark corneas that they have been used as a replacement in human eye surgery.
  11. Eyes heal quickly. With proper care, it only takes about 48 hours for the eye to repair a corneal scratch.
  12. Seeing is such a big part of everyday life that it requires about half of the brain to get involved.
  13. Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about 4-13 weeks old.
  14. The cells in your eye come in different shapes. Rod-shaped cells allow you to see shapes, and cone-shaped cells allow you to see color.
  15. Blind people, as long as they weren’t born blind, can see their dreams.
  16. Eyes use about 65% of your brainpower, more than any other part of the body.
  17. Some people are born with two differently colored eyes. This condition is heterochromia.
  18. The space between your eyebrows is called Nasion.
  19. It is impossible to sneeze with the eyes open.
  20. Even if no one in the past few generations of your family had blue or green eyes, these recessive traits can still appear in later generations.
  21. Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot.
  22. Out of all the muscles in your body, the muscles that control your eyes are the most active.
  23. Ommatophobia is the fear of eyes.
  24. At birth, a baby’s eye is about 75% of the size of an adult eye.
  25. Your eyebrows renew themselves every 64 days.

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