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Sunglasses for Protection

Sunglasses need to block at least 98 percent UVA, and 99 percent UVB.  The EPF (Eye Protection Factor) should be stated on the glasses or attached label.  Sunglasses should fit tightly to block UVR from the sides and top, and have lenses large enough to cover the entire eye area including eyelids.  The colour of sunglass lens is irrelevant – dark glasses do not mean protection, and conversely clear glasses do not mean no protection.  UVR protective coating is clear so clear glasses may offer maximum protection. 

Polarised sunglasses cut down glare, but do not block UVR.