You have probably heard of and have come across the term -Polarized Sunglasses’ before. If you are wondering what they actually are, and how are they different from the other sunglasses in terms of their sun-protection factor, then below is some information that will clear all your doubts.
Why Should One wear Polarised Lenses? Polarised lenses help to reduce glare that is caused when the light from the sun is reflected off certain surfaces such as water, glass, and roads. These lenses help you look at these surfaces more comfortably, and see them more clearly by preventing the glare from reaching your eyes. As a result, you don’t suffer from painful headaches, nausea, fatigue in the eyes, or even short-term blindness.
What is polarised light and polarised glare? Light from the sun travels in the form of waves and in many directions. Polarised light is a group of light waves that move along the same plane, and travel parallel to each other. The group of polarized light waves that is reflected off a horizontal surface travels in the horizontal direction, and composes the polarised glare. In order to block the polarised glare that makes it difficult for the human eye to view objects comfortably, it is imperative that one wears sunglasses with polarised lenses. These lenses have a chemical filter that blocks all the horizontally concentrated light, and allows only the vertical components of the light rays to pass through, thereby eliminating glare.