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Polarized sunglasses, as with other type of sunglasses may not block enough UV to be considered safe. From WikiPedia: for adequate protection, experts recommend sunglasses that reflect or filter out 99-100% of UVA and UVB light, with wavelengths up to 400 nm. Sunglasses which meet this requirement are often labeled as "UV400. In other words, ...


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Polarization and UV protection on sunglasses are two different things. While UV refers to light of a wavelength of approximately 10nm to 400nm, light of any wavelength can be polarized. So polarized sunglasses do not generally protect against UV, they also need a dedicated UV filter. Light emitted by the sun oscillates in all directions perpendicular to the ...


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Those large sun glasses that are used after cataract surgery are great - stops 100% of all types of uv and completely covers your eyes. New $70, used $5 at charity store or just take your mums. Yes, you will look like an old person and they are breakable plastic, but for $5, buy 2.



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