Remember the sunglasses, eye doctors say

Anyone heading outdoors for time in the sun should remember to shield their eyes as well as their skin from the sun’s rays, eye doctors say.

While the memory of a lobster-like burn may remind people to slather on sunscreen, many may be unaware of the damage ultraviolet (UV) light can inflict on the eyes.

But according to the American Academy of Ophthalmology (AAO), there is growing evidence that UV exposure over time can lead to a number of eye disorders and even vision loss.

The group is advising outdoor enthusiasts to invest in a quality pair of sunglasses, and a wide-brimmed hat for good measure.

A number of studies, according to the AAO, have suggested that repeated sun exposure can contribute to age-related macular degeneration, in which the area of the retina responsible for central vision deteriorates, often leading to severe vision loss. UV exposure may also promote cataracts, a clouding of the eye’s lens common among older adults.

In addition, the cornea - the transparent membrane over the pupil - can, like skin, get a sunburn. Similar to a skin burn, these cornea injuries subside after a few days, but not before causing some pain. UV exposure may also cause non-cancerous growths on the eye’s surface called pterygia.

The AAO points to several things to look for in a pair of shades, beyond fashion. First, the label should state that the glasses block 99 or 100 percent of UV light - and not merely that they “block UV light.” The color of the lenses doesn’t matter, the association says, as the UV-blocking layer is clear.

Ideally, sunglasses should wrap around to the temples so that sunlight can’t enter from the sides. A broad-brimmed hat, the AAO says, is a good idea for added protection.

The group also stresses the importance of wearing sunglasses even on a hazy day, and in addition to any contact lenses that have UV protection. Indeed, the AAO says, people should wear sunglasses whenever they’re outside - winter included - though it becomes especially important when UV light is more intense, in the early afternoon and at higher altitudes.

Provided by ArmMed Media
Revision date: July 4, 2011
Last revised: by Jorge P. Ribeiro, MD