Interesting facts you have never known about human eye


  1. The eye is the second most complex organ in our body (after the brain). It is composed of more than 2 million operational parts which can process 36,000 bits of information every hour!                                                                                                                                                                                                                                 inff

  1. The eye muscles are considered as one of the strongest muscles of the human body.When the head is in motion, the external muscles are constantly adjusting the position of the eye to maintain a steady fixation point.In an hour of reading a book the eyes make nearly 10,000 coordinated movements.                                                                                                                                                                                                            eyemu
  2. Blink of an eye takes around 1/3 of a second. An average person blinks 15-20 times per minute, 1,200 times per hour. We spend about 10 percent of our waking hours with our eyes closed
  3. The entire length of all the eyelashes shed by a human in their life is over 98 feet with each eye lash having a life span of about 5 months.                                                                                                                                                         eyelashes
  4. To protect our eye they are positioned in a hollowed eye socket called orbit, while eyebrows prevent sweat dripping into your eyes and eyelashes keep dirt out of your eyes.                                                                                        qu
  5. Only 1/6 of the human eye ball is exposed.                                                                                                                                    qu
  6. The pupil of your eye expands as much as 45% when you look at someone you love.                                                      Dilated-Vs-Contracted-Pupils 
  7. The human eye has the ability to see three primary colours: red, blue and green. All other colours are combinations of these.  Human eye distinguish 10 million colours with various combinations of these.                                                                                                                                         rgb
  8. The Mayans believed that cross-eyes were attractive, and would make efforts to ensure their children became cross-eyed                                                                                                                                                                                                  qu
  9. Our memories are determined by our senses. Of them 80% of our memories are determined by what we see.                                                                                                          
  10. Eyes heal quickly. With proper care, it takes only about 48 hours to repair a minor corneal scratch                          corscr
  11. Humans and dogs are the only species known to seek visual cues from another individual’s eye, and dogs only do this when interacting with humans.                                                                                                                                      visual cues
  12. Iris recognition-The brown/blue part of the eye has unique patterns. These are specific for every individual. Hence scanned images of this part can be used for identifying people.                                                                         re
  13. Some people are born with two differently colored eyes. This condition is heterochromia.                                           hetero
  14. All blue eye people can be traced back to one person who lived near black sea  10000 years ago.It is estimated that only 2 % of population has green eyes, making it the rarest  eye color. 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.        blue                                                                                                                              green eye                                                 
  15. Some women have genetic mutation which allows them to see millions of more colors.                                                colors
  16. If the human eye is a digital camera it would have 576 mp.                                                                                              cam
  17. Researchers have successfully used the game tetris to treat lazy eye.                                                                                  tetris
  18. The space between  the 2 eye brows is called nasion.                                                                                                      nasion                                            
  19. It is impossible to sneeze with eye open
  20. Eigengrrau-It is the brain grey color seen by the eye in perfect dark                                                                                     eigen
  21. Your eye brows renew themselves every 64 days.                                                                                                                    eye brows
  22. School buses are yellow because it is the most attention-grabbing color when seen in our peripheral vision.                schoo
  23. If you are nervous, You tend to blink your eyes more
  24. Your retinas cannot detect the colour red. Although your retinas have red, green and blue colour receptors, the “red” receptor only detects yellow-green, and the “green” receptor detects blue-green. Your brain combines these signals and turns them into red.                                                                                                                                            red yellow green
  25. Peripheral vision has very low-resolution than central vision                                                                                                            peripheral vision
  26. Your tears have different compositions based on whether something’s irritating your eye, or you’re crying, or yawning.                                                                                                                                                                                          Tears
  27. Your eye is constantly making tiny jerking movements called “microsaccades” to stop objects from fading from your vision.          
  28. In a newborn baby, the tears are produced between 1st month to 3rd month. They secrete even before that. But very less which just lubricates the eye.                                                                                                                                        No tears                                                                                                                                                    

References and scientific evidences: