because they are green
Tint is mostly cosmetic. Polarized lenses block the harmful rays and are better for your eyes.
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You can buy polarized sunglasses at specialized eyeglass stores. You can also purchase them at sunglasswarehouse.com, Sierra Trading Post, and Walmart.
Depending on what pair of Oakley's you purchase will decide weather they are polarized or not. Some Oakley sunglasses are polarized and others are not.
Oakley has their own website on which they sell Oakley polarized sunglasses. Other places to purchase these sunglasses would include Cabela's, Nordstrom, and Macy's.
sunglasswarehouse.com, shadesdaddy.com, opticsplanet.net, tahoemountainsports.com, and amazon.com are a few of the many places online that offer polarized sunglasses.
In reference to Ray-Ban sunglasses, their GPL lenses are polarized. The GPL stands for Glass Polarized Lens.
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You can purchase polarized sunglasses online by going to either of the following websites www.ebay.com or www.amazon.com and you can use your swag bucks to save more
1) all "sunglasses" reduce the amount of light to the eyes. 2) "glare" is mainly light reflections ... some of which have become polarized. 2b) thus polarized sunglasses MAY reduce glare under certain conditions.
Electric sunglasses are actually a brand of sunglasses, not a type of sunglasses. The Electric Visual company which makes and sells electric sunglasses is based in California.