Interesting Facts Eyes

 20  Interesting Facts about Eyes

Though we take it for granted, the miracle of vision is one of the greatest gifts we have just by virtue of being members of the human race. Just simple things like seeing a deer in the wilderness, watching our favorite sports teams and viewing great works of art enrich our lives in absolutely immeasurable quantities.
Nevertheless, how much do we really know about these mysterious organs, the eyes that make all of these magical experiences possible?

1. The average blink lasts for about 1/10th of a second. 

2. While it takes some time for most parts of your body to warm up to their full potential, your eyes are on their “A game” 24/7. 

3. Seeing is such a big part of everyday life that it requires about half of the brain to get involved.

 

4. Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about 4-13 weeks old. 

5. You blink about 12 times every minute. 

 

6. Some people are born with two differently colored eyes. This condition is heterochromia.

7. 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. 

8. 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. 

9. Out of all the muscles in your body, the muscles that control your eyes are the most active. 

10. 80% of our memories are determined by what we see.

11. A fingerprint has 40 unique characteristics, but an iris has 256, a reason retina scans are increasingly being used for security purposes.

12. If the human eye were a digital camera it would have 576 megapixels.

13. Our ears and nose grow throughout life, but eyes stay the same size from birth.

14. It is impossible to sneeze with your eyes open.

15. Eyelashes have an average lifespan of five months.

16. Your eyes can get sunburned.

17. Blind people can see their dreams as long as they weren’t born blind.

18. The human eye only sees three colours: red, blue and green. All other colours are combination of these. 

19. Your nose gets runny when you cry as the tears drain into your nasal passages. 

 

20. To protect our eyes they are positioned in a hollowed eye socket, while eyebrows prevent sweat dripping into your eyes and eyelashes keep dirt out of your eyes.