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Focus on Eye Health - Interesting Eye Facts, Part II

Many patients seemed to enjoy our initial list of eye facts, so we've uncovered more special features about the eyes and vision that make the eyes a very unique part of the body.

1. It is impossible to sneeze and keep your eyes open at the same time.
2. You would have to walk 50,000 miles for your leg muscles to get the exercise your eyes get in one day.
3. During intense concentration, such as reading work or school materials, your pupils (black center of your eyes) increase in size. The harder your brain works, the bigger your pupils.
4. Why does a child's eye colour change as they grow? In most cases, the eye colour will darken because the pigment which colours the eye, melanin, starts to move towards the eye surface to cause the colour change.
5. Top five home eye hazards: power tools, cutting and soldering equipment, chemicals and compounds, hand and manual tools, lawnmowers and grass trimmers.
6. Colour blind or colour deficient? Colour deficient is more accurate as the world is not really black, white or grey to those affected by colour vision problems. The most common colour deficiency is either red weak or green weak, followed by blue or yellow weak. About 8-9% of males are colour deficient compared to less than 1% of females.
7. "Don't wear your glasses so often, you need to exercise them." Wearing glasses does not weaken your eyes. The only thing that happens when you don't wear them is you don't see as well.

See other Interesting Eye Facts (Part I)