How do polarized sunglass lenses work

For centuries, sunglass manufacturers have revolutionized the way we protect our eyes from the sun. As far back as prehistoric times, Inuits used to protect their eyes from the sun with thin walrus ivory slabs that had slits to see through. Now, polarized sunglasses are one of the most beneficial sunglasses on the market, and have improved UV ray protection.

What are polarized sunglasses and how do polarized sunglass lenses work?

The sun emits harmful UV rays that can affect our vision. Any light source gives off a certain amount of light waves in the form of radiation. You can think of it as a glare that can sometimes be blinding, and repeated exposure can, in fact, do just that. Polarized sunglasses are designed to reflect, scatter, or refract the light that hits them. Essentially, these lenses block the sun out effectively, without dimming your vision.

How do polarized lenses reduce glare?

The mechanism involved in minimizing glare has to do with polarization itself. Generally speaking, light waves tend to move in multiple directions, until they come into contact with something solid. Light waves polarize once they bounce off of surfaces like water or glass, and tend to move horizontally to match the surface they are reflecting, which produces a glare. Vertically polarized filters on lenses reduce the brightness of these light waves, because they only let in light that does not match the orientation of the reflected surface.

How do polarized sunglass lenses work if they are scratched or broken, and what can be done?

Sunglasses are prone to normal wear and tear like any other pair of glasses, and the Vision Council reports that about 50% of people either break or lose their sunglasses every year. You will find that scratched lenses are not as effective in blocking out glare, because the polarization process is adversely affected by the scratch. You will also be exposing your eyes to UV radiation that can be potentially dangerous to your eyes. In this case, the best thing to do would be to invest in sunglass lens replacement. Replacement polarized lenses can be found at most vision care places.

Protecting your eyes is an important part of your health, and polarized lenses can be one of the best ways to do this. So if you do lose, scrape, or break yours, quickly order polarized replacement lenses to shield your eyes from harm. Learn more: See more.

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