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Constant exposure to the ultraviolet rays of the sun has been known for years as damaging to the vision. If you are constantly exposed to the sun, then getting a good pair of sunglasses is important. Today, many people who regularly do outdoor activities like snow skiing or snow boarding use polarized sunglasses. These polarized sunglasses are designed to protect you from ultraviolet rays and from the newly discovered phenomenon called High Energy Visible Light. Recent scientific studies have shown that strenuous activities that involve using of eyes as part of the concentrated efforts can take a huge amount of energy to process the information that your eyes receive from the environment and to send it to the brain. Studies suggest that by wearing a good pair of sunglasses, one can do outdoor activities and other strenuous activities under the sun without fatiguing or having to spend a tremendous amount of energy. Of course, when choosing a pair of sunglasses, you really don't have to sacrifice its aesthetic appeal over its functionality. Fortunately, designer authentic sunglasses offer a wide range of choices when it comes to style, size and shape. Thus, you can always find one that is not comfortable to wear, but also best suits the shape of your face and your fashion statement. You can even find sunglasses that have added features, such as built in Bluetooth. This allows you to use your cell phone or MP3 player without having to take off your sunglasses.

Novelty sun shades are usually manufactured in designs that are out of people's imagination. Ordinary sunglasses are relatively limited to some models- the frames and the lenses are usually in certain shapes or designs, like rectangle, oval, round, square, or heart. Or the colors are symmetrically tinted on each side of frames and lenses. However, novel sun wear can be designed like anything that people can or can not imagine. For example, the lens shape can be like hands, like mask, like guitar, like $, like fruit, and so on. The colors can be tinted on any parts of the sun wear- no principles are followed. In other words, novel sun shades are made in much more natural and untraditional designs and styles- this may better explain what novelty is.

Novel sunglasses can be used on different occasions. Now that novelty sun wear are mainly used as accessories, they are doubtless the best options for people who often participate in some special parities, like wedding parties, costume party, etc. in such situations, wearers will always become the focus of the public. These sun wear with novelty can also be used while people walking or idling in the crowd- this can really highlight wearers' personal tastes and make them unique to look at.

Sunglasses have the practical effect of comforting your eyes from the glaring sun. This is also an important safety feature, as it greatly improves vision whilst driving (roads create terrible glare) and engaging in sporting activities.

Polarized lenses in sunglasses work by using vertically-aligned filters to block unwanted horizontally polarized light, ie. glare, whilst allowing the useful vertical light through to the eye. Non-polarized sunglasses only reduce the amount of visible light entering the eye, darkening the view. One in five sunglass lenses sold worldwide is a polarized lens, amounting to the estimated sale of 60 million polarized (or polarising) lenses.

Sunglasses also offer protection against the ultraviolet radiation which could cause cataracts and other damage to the eyes including degeneration of the macula, tissue growth on the white of the eye (pterygium) and skin cancer around the eyes if they are subjected to overexposure.

UV radiation has been classified into three types, UVA, UVB and UVC, but protection against UVC is not necessary as this type of ultraviolet is completely absorbed by oxygen and ozone in the atmosphere. It is important when buying sunglasses to make sure they are designed to block 99 to 100% of UV Radiation.

Square is always one of the classic elements in designs of almost all fields - it is very common in the eye glasses industry, too. For example, there are square eyeglasses, square sun glasses, etc. Of this square eye wear, square sunglasses have become some people's first options as summer approaches. Though these sunglass wear are widely worn by people with round or oval faces, the number of people wearing sunglasses in square shapes is very large. Here is a simple explanation about the popularity and specialty of these sun wear.

One of the greatest roles of sunglasses is for decoration - the same are square sun wear. People now tend to match square sunglasses with other accessories, like necklaces, shoes, outfit, or some people have much greater passion for them than other decorating articles. This is can be easily found on young stylish girls, boys, etc. Because wearers now have much more options in the colors and styles of these shaped sun wear. Some of the most popular colors include black, silver, pink, green, gunmetal, etc. These square sun wear in different colors can greatly boost wearers' persona and appearance. What's more, almost all worlds' top name brands in the field are engaged in making sun wear in the shape of square. For example, Ray Ban, Armani, and so on have invested greatly on the innovation and designs of these sunglasses which have raised one and another fashion trend. Therefore, these high fashion sun glasses, to a greater extent, become luxury accessories that stand for social strata, elegance, fashion, etc.

If you are buying sunglasses that you really like, you should consider purchasing at least two pairs. In fact, if possible, buy three or four pairs. However, if the sunglasses you wear are very easy to find, you probably do not need to buy several pairs - there is no need to stock up on a type of sunglasses that are available any time from your local pharmacy.

For those of us who buy trendy or funky sunglasses, the need is even greater. If you find a pair of funky sunglasses that you really like you want to make sure you pick up at least two pairs. You know that you are buying them, in part, because they are unique. By definition, this means they will not be easy to replace. The good news is that most funky sunglasses tend to be relatively inexpensive, so, purchasing an extra pair usually will not break the bank. So why not stock up now?

Obviously, your budget and the cost of the sunglasses will play a large part in whether or not you can stock up on them. That said, it is important to keep in mind that that sometimes you are better off buying two pairs of less expensive sunglasses rather than one pair of really expensive sunglasses.

In the end, we all know how hard it can be to find sunglasses that we really like. If you happen to find a pair of sunglasses that you love, you should stock up on them so you do not regret it in the future.

Any person acquainted with the history of fashion brands must be aware of the fact that Tom Ford is the man credited for single handedly turning around the fortunes of the Gucci brand when it was down in the dumps and on the verge of bankruptcy. So any designer wear or accessory with a Tom Ford label would be surely be only the best of the lot. Established by Tom Ford and Dominico De Sole in 2005, the fashion label has, in a very short span of time, reached the top of the luxury brand market. The sunglasses line has in particular become a hot favorite with popular celebrities and fashion savvy people.

The sunglasses by the popular brand are engineered with utmost finesse using the best Italian craftsmen and their exquisite craftsmanship. The entire sunglasses range is subtle yet stylish and helps to make an ever lasting impact on the onlookers.

Ensuring 100% UVA and UVB protection, most of the shades come with either the logo or the brand name on the temples setting them distinctively apart from the others. The wide variety of sunglasses available would leave the customer confused. The series in the men's range include Charles, Shelby, Arnaud, Hunter, Andres, Pierre amongst others. The women's category has Jennifer, Whitney, Charles, Margaux, Simone and many more. Each line draws inspiration from some event or person that has been a part of Tom Ford's life.

Are you a fan of sunglasses? Buying sunglasses from local online shops or from overseas ones, which is your preferred choice? What do you think of these two ways? Have you had some experiences of buying sunglasses from online, whether from local online shops or overseas ones?

The similarities: The reason why most of you choose buying sunglasses from online shops, whether from local online ones or overseas ones, must be that online prices for most sunglasses are much cheaper than what you would find in a local store. You can also find a much wider selection when you are shopping for these sunglasses from online shops than you would usually find in a local store and the extreme variety alone means you are sure to find something that suits your needs. While, one thing that you may take into serious consideration is that you are not buying cheap quality sunglasses. If you're shopping from online shops, this is going to be a little more difficult since you cannot physically see the sunglasses or inspect them. Here are some things you can do when you are buying sunglasses from local online ones or overseas ones.

• Read reviews of others who have shopped on the sites before.
• Look for any warranties or return policies from the sites
• Does the sites offer any guarantees on your purchase?
• Read what products the sunglasses are made of

If you're looking for Mirrored Aviators, you've come to the right place! These sunglasses were popular over twenty years ago but this style has not died out! Join the ranks of hippies, "aviators", and hipsters alike with a pair of your own.

Aviator sunglasses are named so because the popularity of this style with pilots, or "aviators". If you've ever seen a pilot or the Top Gun movie, you know what I'm talking about. This style is very much popular with non pilots too though!

A lot of hunting sunglasses are in the same style, coming in different lenses for different purposes. Theses are common among police and law enforcement units too.

Mirrored aviator sunglasses are usually a bit larger than the regular sunglasses and helps protect eyes from bright sunlight from damaging eyes. It also helps reduce brightness when outside for driving or playing sports. Usage of them helps us see better when performing certain tasks.

Direct sunlight is very harmful for our eyes, and it's advisable to protect or shade our eyes from ultraviolet radiation while outside. So large mirrored aviator sunglasses handles the job just fine. Make sure the kind you find has UV protection. Most do, so it won't be a big problem.