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Snow goggles (Inuktitut: ilgaak or iggaak, syllabics: ᐃᓪᒑᒃ or ᐃᒡᒑᒃ; [1] Central Yupik: nigaugek, nigauget) are a type of eyewear traditionally used by the Inuit and the Yupik peoples of the Arctic to prevent snow blindness.
Inuit snow goggles function by reducing exposure to sunlight, not by reducing its intensity. Since the 13th century and until the spread of contemporary UV-shielding spectacles against snowblindness, Inuit made and wore snow goggles of flattened walrus or caribou ivory with narrow slits to look through to block almost all of the harmful reflected rays of the sun.
A new review finds that the popular lenses don't help with eye strain, alertness or sleep. Blue light-blocking glasses don't protect eyes or improve sleep, study finds Skip to main content
The researchers hope to conduct further research on the effects of blue light glasses on sleep, eye health, and more, Dr. Sumeer Singh, an author on the study from the Downie Laboratory, said in ...
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The purpose of a double boot is long-term protection from cold weather. If the liner becomes wet, it can be removed from the shell and dried inside a sleeping bag . Since the insulation cannot be removed from single boots, they are not ideally suited for multi-day cold weather excursions.
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