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Sunglasses - Dealing with Glare
The sun's damaging UV rays contribute to many eye health and vision disorders. You need to wear sunglasses not only to protect your eyes from UV rays, but also to protect them from harmful glare. In sunglasses you should always consider clarity, prism, and refraction in addition to ultra violet protection. Clarity is compromised with cheaper sunglasses as images blur as distances increase. Also, in cheaper sunglasses light is bent in different directions, causing a prismatic effect making your brain work harder putting the images together. Polarized lenses enhance the most important function of sunwear by improving visual acuity. Polarized lenses eliminate glare created by light bouncing off of highly reflective surfaces such as metal, glass, water, sand or snow. For years, boaters and fishermen have used polarized sunglasses to reduce reflected glare from the water surrounding them. The popularity of these type sunglasses has soared now that many others who spend time outdoors have discovered the benefits of polarized lenses. Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, bikers, golfers, and runners who enjoy a clearer view along with the elimination of glare.
There is no other circumstance where glare is more dangerous than while driving a car. Besides the normal everyday glare, drivers must endure increased glare formed by the dashboard reflected on the windshield as well as glare reflecting off of the highway. This glare from the windshield reduces a driver's visual acuity. Polarized sunglasses are an excellent choice and reduce glare drastically in these situations.How Do Polarized Lenses Work?
From the moment of reflection, light becomes polarized and forms visual noise or blinding glare that interferes with the real image. The only way to eliminate this glare is to place a polarized lens in its path. Light reflected from surfaces like a flat road or smooth water is generally horizontally polarized. This horizontally polarized light is blocked by the vertically oriented polarizers in the lenses, resulting in a reduction in annoying and sometimes dangerous glare.
Polarized lenses come in a wide variety of colors and are available in single vision and multifocal lenses, including progressive no- lines.
Whether you spend your time boating or waterskiing, golfing, mountain biking, driving or running, polarized lenses are an excellent choice in sunglasses.
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