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Are Polarized Sunglasses a Must For Protecting Your Eyes?

Posted on June 20, 2008

When exercising outside, sunglasses are a must. Personally, I can't stand to have the sun blinding my eyes. Not only that, but UV rays can cause cataracts and glaucoma. Two more reasons to slip on some shades. Last year, I bought a pair of expensive polarized sunglasses, thinking that polarized meant they blocked out those harmful UV rays.Unfortunately, polarized lenses act as a filter to absorb light waves, which helps to reduce glare that bounces off smooth surfaces like pavement or water. This filter action is great when biking or boating but unfortunately has nothing to do with how well ...

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cataracts , exercising , glaucoma