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Lots of harm can be caused to the eye if cheap low quality sunglasses are used. Dark lenses cause a dilation of the pupil, if there are no anti-UV protective features, then the ultraviolets and the infrareds become very dangerous for the eye. The radiations could impair sight and cause a wide range of ophthalmic problems. Another reason why you should always try to buy the better quality sunglasses is image distortion. This is often caused by plastic lenses that have faulty dioptric values which have not been established by medical prescription. Other criteria to appreciate the quality of the best is by comfort and face match. Physiognomy plays an important role in the choice of sunglasses, and you will understand the difference between matching and not-matching glasses by trying several pairs on. Then, besides UV protection, the better glasses also reduce the glare by the anti-polarizing coating that covers the lenses. Can we select the best sunglasses by color too? Well, opinions differ here. The capacity to absorb the colors of the visible spectrum and the reduction of the light intensity vary depending on the color. There are categories of wearers who cannot use very dark lenses because they would impair vision: gray is usually preferred by drivers, pilots and many other users. Green lenses have the highest efficiency in absorbing IR and UV radiation but they make certain colors hard to distinguish. Green affects the perception of violet, blue, red and orange. For tropical locations, green lenses make the better glasses, not to mention the relaxing effect of the color. Brown lenses are suitable in warm and cold environments as well, and they have a good capacity to absorb radiations. Yellow lenses on the other hand are not useful against intense brightness but are great for foggy weather or driving at sunset. The idea is that the best sunglasses are those that provide protection and comfort at the same time. Wraparounds have superior features too because they prevent the UV rays to affect vision on the sides of the eyes. And keep in mind that the price should not reflect the special design of the frames or their glamorous look but the properties of the lenses. The ideal sunglasses for you will provide the desired protection and looks.Eye protection is the most important! Read the articles below to find out what exactly you need from your particular sunglasses. Best Golf Sunglasses Motorcycle Sunglasses Childrens Sunglasses Military Mens Prescription Sunglasses Womens Sunglasses Cases Sporting From Best Sunglasses to Colored Contact Lenses-Colored Contacts-Colored Contact Lens |