10 fun facts about eyes

Eyes are one of the most complex organs in the human body, second only to our brains. Check out these 10 fun facts about eyes from the experts at our vision clinic!

  1. Your eye muscles are the fastest muscles in your body – hence the saying “it happened in the blink of an eye.”
  2. The world’s most common eye color is brown, but brown eyes are actually blue underneath the brown pigment.
  3. Some people are born with two differently colored eyes. This condition is called heterochromia.
  4. Our eyes remain the same size from birth, unlike our nose and ears which continue to grow throughout our lives.
  5. An iris has 256 unique characteristics. To put this in perspective, a fingerprint has only 40 unique characteristics. This is why retina scans are becoming increasingly popular for security.
  6. Age-related diseases such as macular degeneration, diabetes, and glaucoma are the primary causes of blindness for adults in the United States.
  7. Eye transplants are currently impossible due to the sensitivity of the optic nerve.
  8. Each of our eyes has a small blind spot in the back of the retina where the optic nerve attaches, but we don’t notice a hole in our vision because our eyes work together to compensate.
  9. The pupil of the human eye expands as much as 45 percent when you look at someone you love.
  10. One in every 12 men is color blind, and all babies are color blind when they are born.