Fun Eye-Facts


Did You Know?


Fun Facts - Eye facts: Human eye can see 10 million colours Robertson OpticalFun Facts About Color & the Human Eye

  • The human eye can distinguish about 10 million colors.
  • If the human eye was a digital camera, it would have 576 MEGA pixels.
  • It is impossible to sneeze with your eyes open.
  • Night vision goggles are green because the human eye can differentiate more shades of green than any other color.
  • About 2% of women have a rare genetic mutation that enables them to have an extra retinal cone and this allow then to distinguish 100 million colors.
  • Brown eyes are blue beneath brown pigment.
  • When you rub your eyes and see can see flashes of color, it is called phosphene.  Phosphene is the experience of seeing light without it actually entering the eye.
  • Fun Facts -Eye facts: Phosphene is seeing light without it entering the eyeThere are 107 million photosensitive cells in a single eye.  7 million of those cells are known as cones and they are responsible for detecting color.  The remaining 100 million cells are rods and they are responsible for distinguishing between black and white.


Fun Facts – Blinking Eyes or Winking Eyes?

  • Fun Facts : Blinks take 100-150 millisecondsThere are more than 2 million working parts in the human eye.
  • The expression “in the blink of an eye” relates to the blink being the fastest muscle in the body.
  • Normally, we blink every 6 seconds, that averages out to about 14,000 blinks per day.
  • Eyes blink less when reading and more when talking.
  • 80% of our memories are determined by what we see.
  • While a fingerprint has 40 unique characteristics, an iris has 256.  For this reason, iris scans are used for security purposes.
  • Human eyes are capable of focusing at 50+ things in any given second.
  • A blink lasts anywhere from 100-150 milliseconds.  A person can blink 5 times in one second.  For this reason the eye muscles are considered the fastest in the body.