Your eyelashes keep dirt out of your eyes.

Your eyelashes keep dirt out of your eyes

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Just behind our pupil is the lens – which is round, flat and thicker

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The world’s most common eye colour is brown

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Our eyes are always the same size from birth, but our nose and ears

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A healthy (non-colorblind) human eye can distinguish between 500 shades

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Your eyes start to develop just two weeks after conception

Human Body Facts

Each individual eye contains 107 million cells and all are light