Questions are frequently asked like "Are sunglasses necessary?" "If so, should they be worn at all times?" "Which colors are
best?" "How dark should they be?" "Is ultraviolet light harmful to the eye and should it be filtered out with the
sunglasses?" Ultraviolet (UV) light does have a detrimental effect on the retina over time, so it is important to block it.
The amount of tint or the color of the lens is generally left to personal preference. The gray tint filters out light most
evenly through the visual spectrum, and is the most popular color. The next most popular is amber and after that, green.
Some people claim that their vision and color perception is enhanced by the amber color. Some people are naturally more
sensitive to bright light than others and rely more on sunglasses. The lens of the eye filters out the harmful portion of
the ultraviolet light, but it can contribute to cataracts. It is therefore advisable to wear sunglasses to obtain maximum
protection. The best sunglasses not only block UV light, but are polarized and have an antireflective coating to increase
the effectiveness.
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