About your eyes

• The human eye can distinguish between 500 shades of grey
• The human eye can detect 10 million different colours
• The clear cornea at the front of the eye is the only living tissue in the human body that does not contain any blood vessels
• Eyes are composed of more than 2 million working parts
• Men can read smaller print than women (but women can hear better!)
• Eyes are the most complex organ apart from your brain
• It is impossible to sneeze with your eyes open
• Smoking reduces your night vision
• Your visual field increases by 10% in the dark because your pupils are larger
• If you go blind in one eye, you only loose around 1/5 of your total vision

Children

• Babies’ eyes don’t produce any tears until they are about 6-8 weeks old
• Babies can’t blink before the age of 6 months
• All babies are born colour blind
• It can take some children up to 3 years to attain their final eye colour

Lifetime

• Your eyes blink over 10 million times a year
• Eyes contribute 85% towards your total knowledge
• 80% of our memories are made up of visual images
• Your eyes will never wear out
• We shed over 30 million eyelashes over our lifetime
• The lens inside the eye continues to grow throughout life