Sunglasses with colored lenses (such as amber or gray) don’t block out more sun. However, a brown or rose-colored lens can provide more contrast. Athletes who play sports such as golf or baseball often find this contrast enhancement useful.Mirror finishes are thin layers of metallic coatings on an ordinary sunglass lens. Although they do cut down on the amount of visible light entering your eyes, never assume they will fully protect you against UV radiation.And again, remember that while very dark-colored lenses may look cool, they do not necessarily block more UV rays.
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