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Poor quality, that is what comes with cheap sunglasses. On the other hand, reputed brand names are a guarantee of great quality standards because this is how they preserve reputation and continue tradition. What people don’t know is that cheap eyewear could cause a lot of damage to the eyes. Dark lenses cause a dilation of the pupil, thus the entrance gate for the infrareds and ultraviolets will be a lot higher in the absence of UV protection features. The radiations could impair sight and cause a wide range of ophthalmic dysfunctions such as affections of the crystalline or cataract.

Image distortion is one other flaw of poor quality sunglasses. The best sunglasses will not pose problems in terms of dioptric values although a doctor’s opinion may be needed. A further criterion to appreciate the quality of the best sunglasses is by comfort and face match. If you try more pairs on, you’ll see that there is a big difference between matching and not-matching glasses, as they have to fit well on the face. Then, the best sunglasses also reduce the light reflection or glare by the presence of an anti-polarizing coating.

Can lens color influence a classification of the best sunglasses? Well, opinions differ here. The capacity to reduce light intensity and absorb the colors of the visible spectrum varies with the color. Not anyone can wear dark lenses for instance because they can reduce visibility: 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. Greenaffects the perception of violet, blue, red and orange. Nevertheless, when you are on vacation in some exotic location, green lenses make the best sunglasses, plus, this color has a very relaxing effect too.

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 are among the most advanced of items because they protect the sides of the eyes too against the impact of the ultraviolets. Consequently, the properties of the lenses and the eye protection should justify a high price, and not fanciful frames.

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