Facts about the human eye
Facts about the human eye
The human eye is pretty incredible, it's why it is so important to look after yours properly.
We've collected a list of our favourite facts about the human eye for you to enjoy.
- The average blink lasts about 1/10th of a second
- Seeing requires about half of the brain to get involved
- The eye is the fastest muscle in your body
- Our eyes remain the same size from birth
- You blink more when you talk
- People generally read 25 times slower on screen than on paper
- It’s impossible to sneeze with your eyes open
- The human eye can see 500 shades of grey
- Eyelashes have an average lifespan of 5 months
- A newborn baby will cry but not produce tears
- Our eyes are made up of 200 million working parts
- Eye muscles are the most active in the human body
- It’s possible to blink 5 times in a single second
- Blue-eyed people share a common ancestor with every blue-eyed person in the world
- The older we get, the less tears we produce
- If you lined up all the eyelashes you shed in a lifetime, they would measure 98 feet long
- The eyeball weighs around 28 grams
- 89% of our memories are determined by what we see