Hallux’s i-Guide: Why do people wear sunglasses?

Sunglasses are an easy way to shield them from harmful Ultra Violet or UV rays which can damage your body’s cells.

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Sunglasses have darker lenses than normal glasses which help to reduce glare – that’s the very brightest light, the sort that can make you scrunch your eyes up!

Glare can be tiring for eyes and make it harder for them to do their job – which is why it’s a good idea to get your sunspecs on when it’s sunny outside!

Next: What is lazy eye?

> Visit Professor Hallux’s i-Guide homepage
> Download the free i-Guide podcast from iTunes

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