Polarized sunglasses use lens coatings that reduce glare. Think of them like window blinds; they let in some light but block out excessive rays. Their polarization filters blocks horizontal light waves that commonly produce glare. While sunglasses with polarized lenses absorb horizontal light waves to reduce brightness, they still allow vertical rays to pass through for clear vision. Blocking out horizontal light waves keeps you from squinting, or worse, being temporarily blinded by the glare from bright sunlight.
Benefits of Polarized Sunglasses