According to experts, there are two parts you should pay special attention to when selecting a fine pair of glasses suitable for you, that is, the frame and the lenses. The best choice of a customers is the sunglasses that fit the shape of your face, and at the same time feel comfortable and protect the eyes from the harmful external rays. The reason that eye protection and clothes collocation are two main functions of sunglasses. If the sunglasses which can take good care of both of the two is the best one!
According to the result of an experiment conducted by the British retailer firm BOOTS, lens of pink, blue, green or other bright colors may contort the wearer's seeing and leave them unable to see some colors clearly. People with special jobs such as bus drivers should be careful when choose sunglasses. When you are buying sunglasses, choose those that have CE marks to make sure a certain degree of UV blocking. The ordinary sunglasses do not have the strength, that is, the diopter is 0. So you should try the eyeglasses to make sure there are no dizzinessand headache feeling when selecting sunglasses.
At present there are some sunglasses marked with certain strength for sale in the market. However due to different indexes such as pupil distances, without the professional guidance, the customers had better not choose this kind of sunglasses. To buy sunglasses, you should place it on counter. If the glasses cannot stay steady, it means there are some problems with the frame. Hold the legs and keep the lens toward the daylight lamp so that the bars of glisten roll smoothly on the lens. If you find the line is not straight but waving, that means the eyeglass is not good. Such lens will harm your eyesight.
The eyes are very sensitive organs, so when you choose sunglasses the quality should be put on the first place. In addition to the function of blocking UV,the transparency should be high and the lenses should be flat. When you are attending formal ceremonise, you'd better not hang your optical eyeglasses on your neckline, because that is rather casual.
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