frequently asked questions
The goal of performance sunglasses is to provide you with the best vision possible under all conditions. These glasses are designed to be lightweight, flexible, durable materials, no-slip, and have lens color variations.
Polarized sunglasses provide superior glare protection — especially on the water.
Polarized lenses contain a special filter that blocks this type of intense reflected light, reducing glare.
Yes. Sports eyewear in general tends to be safer than regular sunglasses because the lenses and frames are made of special materials that are unlikely to shatter if struck and can give you the benefits of both sunglasses and protective eyewear. Also, certain lens colors in performance sunglasses can enhance your vision for certain sports; brown, for example, is popular with golfers because it provides nice contrast on those very green golf courses.
Ultraviolet (UV) rays are located just past the violet portion of the visible light spectrum; sunlight is the main source. UV light is broken into three different types: UVA, UVB and UVC.
- UVA has longer wavelengths and passes through glass easily; experts disagree about whether or not UVA damages the eyes.
- UVB rays are the most dangerous, making sunglasses and sunscreen a must; they don’t go through glass.
- UVC rays do not reach the Earth because its atmosphere blocks them.
The sun’s rays are strongest between 10 a.m. and 2 p.m., but that’s not the only time UV rays can affect your eyes. Also, most people think that they’re at risk only when they’re outside on a sunny day, but UV light can go right through clouds, so it doesn’t matter if the sky is overcast. Glare and reflections can give you trouble too, so have your sunglasses ready if you’ll be around snow, water or sand, or if you’ll be driving (windshields are a big glare source). Sunlamps, tanning beds, photosensitizing drugs, high altitudes and proximity to the equator also put you at greater risk. [To find out how high the UV light levels are today where you live, here’s a UV index map for the United States, updated twice a day by AccuWeather.]
You must wear sunglasses to prevent damage to your eyes. While some contact lenses provide UV protection, they don’t cover your whole eye, so you still need sunglasses. Look for sunglasses that protect you from 99 to 100 percent of both UVA and UVB light. This includes those labeled as “UV 400,” which blocks all light rays with wavelengths up to 400 nanometers. (This covers all of UVA and UVB rays.) Also, you may want to consider wraparound sunglasses to prevent harmful UV rays from entering around the frame.