Sunlight scatters in all directions. But when it strikes flat surfaces, the light that is reflected by the surfaces tends to become polarized — meaning the reflected light beams travel in a more uniform (usually horizontal) direction. This creates an annoying and sometimes dangerous intensity of light that causes glare and reduces visibility.
Polarized lenses have a special filter that blocks this type of intense reflected light, reducing glare and discomfort.
Polarized sunglasses block glare from light reflecting off flat surfaces better than any other type of sunglass lenses, making them very popular among people who spend a lot of time outdoors, on the road and particularly near water.
But sunglasses aren’t just for people who love boating, fishing or going to the beach. Anyone who is bothered by glare outdoors can benefit from these advanced sunglass lenses.
Polarized sunglasses can be helpful for driving, too, because they reduce direct reflective glare from the hoods of vehicles and light-colored pavement.
Some light-sensitive people, including someone who has had cataract surgery, also will benefit from polarized sunglasses.
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