Continued long-term exposure over months and years can cause or exacerbate conditions such as pre-mature aging of the skin, cancer, pterygium, cataract, and macular degeneration.įor an AR coating applied to the front surface of a lens, the coating provides additional protection beyond the UV-absorbing properties of the lens itself.
SPECTACLE WEARER OF THE YEAR 2007 SKIN
On the other hand, short exposure of several hours to normal UV levels, or brief exposure to high levels of UV, can cause immediate and painful problems such as sunburn to skin and keratitis. At typical levels in the natural environment, IR from sunlight gives the sensation of warmth on the skin, but poses little risk to the structures of the eye. This will reduce glare from light sources both in front of and behind the wearer.īy the very nature of how AR coatings work, they will generally increase reflection of non-visible wavelengths, notably ultraviolet (UV) and infrared (IR). AR coating should be applied to both lens surfaces, since it will decrease the direct and internal reflections that can occur at each surface. It is recommended for virtually all types of eyewear, including clear lenses for general, everyday use as well as nighttime driving photochromic lenses for patients who frequently move between indoors and outdoors throughout the day and occupational near and intermediate lenses for computer users indoors.
Anti-reflection (AR) coating is an excellent spectacle lens option for increasing luminous transmission of the lens, reducing glare, and enhancing the cosmetic appearance of the wearer.
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