10 THINGS I bet you never knew

Compiled by Melaine Warren

Tuesday, September 04, 2012    

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SEPTEMBER is Children’s Eye Health and Safety Month, and seeing that many people might not find this the least bit interesting, we have found some weird and cool facts about the human eye.

1 The eye of a human can distinguish 500 shades of grey.

2 The cornea is the only living tissue in the human body that does not contain any blood vessels.

3 The lens of the human eye changes shape to help focus light, but for lots of fish and reptiles, their lens focuses light by moving forward and backward in the eye, just like a telescope or camera.

4 Why do you blink? Blinking helps move tears over your eyes, keeping them moist, and giving your eyelids something slippery to glide across.

5 The human eye can detect 10 million different colours.

6 Eyes are composed of more than two million working parts.

7 Under the right conditions the eye can discern candle light at a distance of 14 miles.

8 If you go blind in one eye you only lose around 1/5 of your total vision.

9 The eye is the only part of the human body that can function at 100 per cent ability at any moment without rest.

10 Eyes are the most complex organ, apart from your brain.



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