Everyone knows that sunglasses can make it easier for people to see on sunny days, whether on the road or in the water. However, according to the American Society of Ophthalmology, the world's largest association of ophthalmologists and surgeons, wearing appropriate sunglasses is also the best defense against short-term and long-term eye damage caused by ultraviolet (UV).
Look for UV protection
Don’t be deceived by 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. Some manufacturers’ labels say "UV absorption up to 400nm." This is the same thing as 100% UV absorption.
Check lenses for quality
Look for a uniform tint, not darker in one area than in another. 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, such as the edge of door. Slowly move the lens across the line. If the straight edge distorts, sways, curves or moves, the lens is flawed.
Bigger is Better
The more coverage from sunglasses, the less sun damage inflicted on the eyes. Consider buying oversized glasses or wraparound-style glasses, which help cut down on UV entering the eye from the side.
Cost
Cost shouldn’t be a factor. Sunglasses don’t have to cost a lot of money to work well. Less expensive pairs marked as 100 percent UV-blocking can be just as effective as pricier options.
Prescription or The Glasses You Wearing
If you have a prescription, take it to an optician. If you love the glasses you’re currently wearing, a good optician should be able to replace the lenses with your prescription. And working with an optician gives you some options, like anti-glare coating, that you may not be able to get when you choose sunglasses off a drugstore rack. Of course, you can get a whole new pair--and a benefit of going to an optician is that you’ll be able to get help finding a shape that’s flattering to your face--and a perfect fit.
Variety of Styles
Get outside your comfort zone. Because glasses are worn right here on the face and they're worn during the summer, they are very much a style accessory. You can change it up. It can really change your overall look. I do recommend each man maybe have one, two extra pairs out there. Some of you guys probably have ten pairs of sunglasses.
Don’t Forget The Kids
All of the same principles apply to children, who are likely to be spending a lot of time outdoors on sunny days. You may be tempted to buy the least expensive pair for them, but remember that their exposure to damaging rays is just starting. Teach them to wear their sunglasses, and how to take care of them, just as you do.
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