
Photo by 7phoPoor quality, that is what comes with cheap sunglasses. Low standards are not a problem with reputed brand names because their best sunglasses represent a continuation of tradition and the preservation of good reputation. Lots of harm can be caused to the eye if low quality sunglasses are used. The pupil dilates because of the dark lenses, if there are no anti-UV protective features, then the ultraviolets and the infrareds become very dangerous for the eye. Sight impairment, crystalline dysfunctions and cataract could be among the severest consequences of the exposure to radiations.
Another reason why you should always try to buy the best sunglasses possible is image distortion. 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. 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. 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.
Warm and cold environments are perfect for both cold and warm 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. Consequently, the properties of the lenses and the eye protection should justify a high price, and not fanciful frames.
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January 29th, 2010 at 3:23 pm
i saw your post through google. I read couple of your article. very nice.
Keep it up