Polarized sunglasses are specialized eyewear designed to reduce glare from surfaces such as water, snow, and glass. Glare distorts the true color of objects and makes them harder to distinguish. Polarized sunglasses can be useful for certain sports and driving, helping participants to see more clearly and avoid potential hazards.
Sunlight can be absorbed or reflected in several different directions. Sunlight that is bouncing off horizontal surfaces such as water, land, or the hood of a car is usually reflected in a similar horizontal direction.
This reflection products an agitating source of glare that cannot only create visual discomfort but can also cause a potentially blinding glare. Glare has the potential to create a very dangerous situation, especially while driving. Polarized lenses contain a laminated filter that allows only vertically oriented light to pass through.
This blocks the horizontally oriented light, so glare is almost eliminated.