It may seem obvious, but “if you spend any time outdoors, you should wear a hat and sunglasses,” Dr. Scott Greenstein, an ophthalmologist at Massachusetts Eye and Ear Infirmary, says. This is not just an issue of comfort.
Studies have shown that repeated sun exposure could increase incidence of cataracts, which cause cloudy vision as well as macular degeneration, a condition that reduces vision in the central part of the retina.
Obviously, the bigger the lens, the more of the eye is protected, but any style with ultra violet protection is sufficient. For those looking for maximum protection, Greenstein noted yellow and orange tinted lenses have been shown in some studies to absorb the wavelength of light that increases the risk for cataracts and macular degeneration.
But if the idea of a lemon-tinted world turns you green, that’s fine, he says. The best protection from sunglasses comes from having a pair you will want to wear for any and all sun exposure.