Polarized picture

Glare created by the sun travels in horizontal waves. The application of the filter to the lenses reduces horizontal light while allowing vertical light in. The horizontal light is absorbed by the lenses.

Polarized Film

There are times when polarized sunglasses can make it harder for you to see and a non-polarized lens is a better and safer choice:

If you spend a lot of time in bright light, you know it can be hard to see. Polarized sunglasses provide relief from the straining and squinting caused by sunlight reflecting off of surfaces. They also help improve visual clarity in situations in which there is a lot of glare, such as:

Polarized sunglasses test

Think of it this way: The film is applied to the lenses like vertical blinds on a window. When blinds are open, only vertical light gets through. This makes it easier for you to see in bright conditions.

Both polarized and non-polarized sunglasses help you see better on sunny days. The main difference between them is that non-polarized sunglasses don’t have the filter that reduces  glare from light reflected off of water, snow, or the road.

While most sunglasses protect your eyes from ultraviolet (UV) rays, it’s still a good idea to check before you buy a pair. The anti-glare filter in polarized lenses does not block the sun’s harmful UV rays.

Polarized sunglasses

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You can be confident buying from Foster Grant because all of our sunglasses, including our polarized options, provide 100% protection from UVA and UVB rays. Our shades can help protect your eyes from the harmful effects of sun damage whether you’re in direct sunlight or in the shade.

Polarized sunglasses have a specialized filter in the lenses that reduces glare. They’re especially good to wear on bright, sunny days when sunlight reflects off of flat surfaces like the road or a body of water, creating glare that can make it hard to see.