What to look for in your sunglasses

April 15, 2013 6:14 PM | Skymet Weather Team

Sunglasses are an easy solution that makes life more comfortable when outdoors, while also providing critical protection from the sun’s damaging ultraviolet (UV) rays. Long-term exposure to UV rays can damage the eye’s surface and sometimes contribute to cataracts. Ophthalmologist recommend wearing sunglasses and a brimmed hat whenever you’re in the sun long enough to get a suntan or sunburn. And fortunately or unfortunately, a high price is not always a guarantee of high quality and protection. But if you are still one of those who'll splurge on sunglasses every year, then it may be worth thinking about how good they are for your eyes.

Here are some things to keep in mind when shopping for sunglasses:

UV protection

Don’t be deceived by the color or cost. The ability to block UV light is not dependent on the darkness of the lens or the price tag. While both plastic and glass lenses absorb some UV light, UV absorption is improved by adding certain chemicals to the lens material during manufacturing or by applying special lens coatings. Always choose sunglasses that are labeled as blocking 99-100% of UV rays.

Lense quality

Look for a uniform tint, not darker in one area than in another.  Do not confuse the shade of the lenses with their ability to filter UV rays. Dark sunglasses may still allow UV rays to enter the eye. Sunglasses are marked with a filter category from 0-4, where 4 is the darkest lens. To check for imperfections in the lenses, hold the glasses at arm’s length and then look through them at a straight line in the distance. Slowly move the lens across the line. If the straight edge distorts, sways, curves or moves, the lens is flawed.

Eye safety

Remember, even the best sunglasses cannot protect your eyes from certain intense light sources. Arc welding, snowfields or gazing directly at the sun (even during a solar eclipse) all require special protection to prevent damage. Even on a cloudy day, UV radiation will penetrate the eyes. Like adults, children's delicate eyes need protecting from the sun. From birth, it is a good idea to protect a baby's eyes with a sunhat, umbrella. As soon as possible, they should be wearing sunglasses made with tough polycarbonate plastic lenses that will not damage their eyes if they break.

Fitovers and Wraparounds

Though not stylish, fitovers are sunglasses that can be worn over your regular prescription glasses and they often provide the wraparound feature. While Wraparounds offer an added protection. These are sunglasses that wrap around the temples and prevent the sun’s rays from entering from the sides. Studies have shown that enough UV rays enter around standard sunglass frames and harm the eyes.

Oakleys (probably the best), Boots, Rayban, Marcolin, Hobie, Dolce & Gabbana, and Polo Ralph Lauren are some the top sunglasses brands that could make you look trendy this summer.

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