There are about 39 million people that are blind around the world.

There are about 39 million people that are blind around the world

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Colour blindness is more common in males

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We have all have unseen, harmless microscopic creatures living in our

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There are about 39 million people that are blind around the world

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A quarter of the bones in your body are in your feet

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Eyes are able to process 36,000 pieces of information in a single hour

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Spectacles had been treating long-sightedness for around for 300 years