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1. Look for a label
Sunglasses should have lenses that block 99 to 100 percent of both UVA and UVB rays, and they need to carry a tag or sticker stating they do. Fortunately, you don’t have to pay a lot to get this level of protection. “The industry standard is such that even less-expensive sunglasses are made to block this much UV,” says Dr. Monica. That means whether you purchase your pair at a department store or drugstore, or in a high-end boutique, your eyes will be safe if you seek out these tags.
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