Why Do We Need Sunglasses?

Why Do We Need Sunglasses?

Sunglasses or sun glasses (informally called shades) are a form of very protective eyewear designed primarily to prevent bright sunlight and high-energy visible lights from damaging or discomforting the eyes. They function as variously termed as spectacles or glasses exist, as visual aid, featuring lenses that they are colored, polarized or darkened. In the early 20th century, they were also called as sun cheaters (cheaters then being an American slang term for glasses) Sunglasses came…

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