Polarized sunglasses protects our eyes from glare & prevents deteriorate our vision. There are lots of low quality lenses in the market today that are polarized but has lower components/ materials called tri-acetate. Don't compromise your health or your vision in particular against these products.
Make sure you have a good quality lenses on your sunglasses as this polarized film embedded in the glass either in plastic or polycarbonate wherein it filters the harmful UV or Ultra Violet rays and blue lights at 475 nanometer spectrum.
Tinted sunglasses just shade off the glare but it won't really eliminate the harmful rays.
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