by admin | November 27, 2018 5:56 am
Sunglasses are so commonplace in this day and age that most of us take them for granted. But according to Utah-based Olympic Eyewear, there is still plenty the general public does not know about sunglasses and eye protection. Olympic staff members get plenty of questions from retailers looking for answers to their own customer’s questions.
How much do you know about sunglasses and eye protection? Test your knowledge against these 6 most frequently asked questions companies like Olympic Eyewear answer:
There are two kinds of light emitted by the sun that pose a direct danger to human eyes. The first is visible light. It is not nearly as damaging as the second – what is known as ultraviolet (UV) light. UV light is especially harmful because it cannot be seen with the naked eye.
As for UV rating, it tells consumers how much protection a pair of sunglasses offers. A rating of UV 400 means that a pair of sunglasses blocks 100% of harmful UV rays.
No, not necessarily. How dark a set of lenses is has little to do with UV protection. In fact, a darker pair with a lower UV rating can actually be more harmful. Darker sunglasses force the eyes to dilate more, and less UV protection for dilated eyes translates to more danger.
Believe it or not, no. Sunglasses should be worn on the brightest and sunniest of days when you’re going to be outside for more than just a few minutes. But understand that your eyes need exposure to natural sunlight. Do not be so worried about sunshine that you wear your sunglasses just to step outside and get the mail. If you’ll only be outdoors for a few minutes, skip the shades and allow your eyes to get some sunlight. They need it.
Ultraviolet light is not diminished by cloud cover. So if you plan to be outside for more than a few minutes on an overcast day, still plan on wearing your sunglasses. You don’t have to be religious about it. If you forget your sunglasses on the way out the door, it’s not the end of the world.
Polarized lenses have a special filter embedded within to prevent sun glare. Sun glare is caused by the dispersal of light as it reflects off a surface like water or snow. Polarized lenses filter out all the light except that traveling in one direction. This is what eliminates glare.
Given that the primary purpose for wearing sunglasses is to protect against UV light, it is really not necessary to wear them once the sun goes down. Some people like to do so for personal image reasons, and that’s okay as long as they follow a few simple safety precautions.
First, never drive at night while wearing sunglasses. Second, be very careful walking around. And third, don’t do it all the time. Just like your eyes need exposure to natural sunlight, they also need to be exposed to natural darkness. Wearing your sunglasses all night, every night, will eventually cause you problems.
Sunglasses are a part of modern life. If you don’t own at least one pair rated UV 400, you really should think about changing that. Sunglasses are an invaluable tool for protecting the eyes against harmful UV light. And guess what? You’ll look good, too.
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