what are polarised sunglasses

Polarized sunglasses are eyewear made with special lenses that reduce reflected glare from surfaces such as water, snow, and glass. They are designed to reduce light glare and eyestrain, which improves vision and safety in the sun. Polarized lenses have a special chemical applied to them to filter light, and the chemical’s molecules are lined up specifically to block some of the light from passing through the lens. The lenses block all the horizontal light waves bouncing off a smooth pond or a shiny car hood, for instance, and only light rays that approach your eyes vertically can fit through those openings. As a result of this filtering, the image you see with polarized lenses is a bit darker than usual, but objects look crisper and clearer, and details are easier to see. Polarized sunglasses are excellent for driving, exercising outside, and any outdoor activities involving water, such as fishing, sailing, and water-skiing. They can also help reduce eye strain and fatigue, and alleviate some eye strain. Polarized lenses will not protect your eyes from UV damage more than standard 100% UV lenses, but they can give you clearer, more accurate vision.