when were sunglasses invented .?
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There are records of sunglasses in earlier history but these were only tainted glasses used to correct eyesight. They were not made to protect the eyes against the sun.
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Sunwear actually predates eyewear. Eskimo people fashioned the earliest known sunwear from shells or wood, such as those shown above. The small slits in the eyewear only allowed a fraction of the light to come through to the wearer’s eyes to prevent snow blindness.
http://www.drivewearlens.com/history.php?subpage=1
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