Amazing Facts About Eyes That Will Fascinate You

Here are 20 more amazing facts about eyes:

1. The only organ in the body more complex than the eye is the brain.
   
   
2. More than 1 in 8 men experience color blindness.
   
   
3. Over 80% of the brain’s input comes from our vision.
   
   
4. Children with vision issues are frequently misdiagnosed with dyslexia, ADHD, or other learning challenges.
   
   
5. There are no pain receptors in the eye, so serious conditions like glaucoma and macular degeneration can progress unnoticed until significant damage occurs.
   
   
6. Eyes have a remarkable ability to heal, with minor corneal scratches typically healing within about 48 hours.
   
   
7. Your eyes shift focus over 50 times every second.
   
   
8. Each eye is connected to the brain by over 1 million nerve fibers.
   
   
9. Although the retina detects only red, blue, and green, we can perceive over 10 million different colors.
   
   
10. The cornea, the front part of the eye, gets its oxygen directly from the air, not from the lungs.
    
    
11. Only one-sixth of your eyeball is visible.
    
    
12. In complete darkness, the human eye can detect a candle flame from 14 miles away.
    
    
13. The iris has 256 unique characteristics, while fingerprints have only 40.
    
    
14. When concentrating, most people only partially blink, leading to dry spots and redness in the eyes.
    
    
15. Throughout a typical lifetime, you will see over 24 million images.
    
    
16. The retina contains two types of cells: rods and cones. Rods handle night vision and shapes, while cones provide sharp vision and detect colors.
    
    
17. The average person blinks 12 times per minute.
    
    
18. A shark’s cornea is nearly identical to a human’s and has been used in human eye surgeries.
    
    
19. The eye has the fastest contracting muscle in the body, reacting in less than 1/100th of a second.
    
    
20. The “red-eye” effect in flash photography is caused by light reflecting off the densely packed blood vessels in the retina.
    
    
21. The cornea is the only tissue in the body without blood vessels.
    
    
22. The human eye weighs just under an ounce.