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20 Eye Facts To Celebrate 20/20


Your eyes are one of the most amazing parts of your body – but some people don’t know too much about them. We’ve put together a list of 20 eye related facts to celebrate the launch of our 20/20 vision or better money back guarantee - a guarantee that all patients who have an iLASIK™ laser eye surgery procedure will receive a full refund if they do not achieve 20/20 vision or better.


Top 20 eye related facts:

  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 at their peak 24/7.
  3. Eyes heal quickly. With proper care, it only takes about 48 hours for the eye to repair a corneal scratch.
  4. Seeing is such a big part of everyday life that it requires about half of the brain to get involved.
  5. Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about 4-13 weeks old.
  6. Around the world, about 39 million people are blind and roughly 6 times that many have some kind of vision impairment.
  7. Doctors have yet to find a way to transplant an eyeball. The optic nerve that connects the eye to the brain is too sensitive to reconstruct successfully.
  8. 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 colour.
  9. You blink about 12 times every minute.
  10. Your eyes are about 1 inch across and weigh about 0.25 ounce.
  11. Some people are born with two differently coloured eyes. This condition is heterochromia.
  12. 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.
  13. 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.
  14. Out of all the muscles in your body, the muscles that control your eyes are the most active.
  15. 80% of vision problems worldwide are avoidable or even curable.
  16. Reading in dim light won’t hurt your eyes. The worst that might happen is that you get a headache.
  17. You actually only see three colours; red, blue, and green. All other colours are created through the combination of these three colours.
  18. The first person to ever have blue eyes lived around 6000 and 10000 years ago. Before then, everyone had brown eyes
  19. If you wore glasses which flipped images upside down, your brain would correct your vision
  20. The muscle which controls your eyelids and blinking is the fastest muscle in your body.


Do you have any eye related facts that you would add to our list? Join in the conversation on our Facebook page or Tweet us @opticalexpress with your suggestions!

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