Sunglasses protect our delicate eyes from the harmful rays of the tropical sun. So it is a good habit to put on sunglasses whenever you are outside driving or working under the hot sun. There are also Polarized Sunglasses to give better protection still. Polarized lenses are absolutely the best way to eliminate glare. Coatings can be added to the surface of a lens to reduce glare, but these coatings affect all light, not just glare. A polarized lens will dramatically improve vision on sunny days near water, snow, or roadways. Eliminating glare on water can even help you see below the surface.
The additional protection of polarized lenses is also important for refractive surgery patients and pre or post-op cataract surgery patients. Anyone on UV sensitizing medications such as insulin or hormone replacements will also benefit greatly from polarized lenses.
Polarization is not a coating placed on the outside of the lens. It is a thin layer of iodine crystals arranged in vertical rows and sandwiched into the middle of a lens. Although it may seem a bit feeble to compare this lens to microscopic mini blinds, that’s really the easiest way to illustrate how polarization works. Light can pass straight through these crystals, but glare is completely blocked.
Related posts:
I have to agree with the comments about polarized sunglasses eliminating glare. After years of wearing any kind of sunglasses only trying to go with the darker ones ( I thought thats what I needed) I finally tried the polarized sunglasses. I soon discovered that I didn’t need the dark ones, just the right ones. The polarized sunglasses that I bought were not the most expensive but they really improved my field of vision and with no squinting. The glares are gone and driving vision is greatly improved I would not switch back.
I always buy polarized sunglasses. I never buy to dark sunglasses.