many shopkeepers selling sunglasses cheap price

The name of the function as sunglasses, sunglasses to protect people from the sun. When people stand in the sunlight, people adjust the flux, adjust our pupil size. Therefore, when the sunlight intensity is beyond our ability to adjust flux, our eyes hurt. Therefore, in the summer, many people wear sunglasses outdoors, in order to reduce the damage caused by the sun.
Light-colored sunglasses do not keep an eye on the sun has a very good effect. But they have many different color, suitable for matching different clothes. These sunglasses are very good decorations, especially female fashion. However, some other special purpose sunglasses can do well, in the sun block. For example, while at the beach, skiing, and mountain climbing, we should wear the sunglasses. Therefore, for different groups of people, they can choose Sunglasses according to their interests and favor, but the basic principle is, don't let an eye injury.
It is true, many shopkeepers selling sunglasses cheap price, in order to attract more customers. These cheap sunglasses in the fashion appearance, but they do not have any packaging and branding. It is easy to recognize, these sunglasses is it right? Good quality. Therefore, many opticians advised us not to buy cheap sunglasses, only because of their price, we should buy qualified. Of course, this is not to say that cheap no qualifications. It is perfect, and if we can buy Sunglasses with low price and good quality. But one thing is our eyes could get hurt. Some cheap sunglasses is of poor quality, not only can protect our eyes from the glare of the sun, but it may hurt our eyes.
So the sunglasses, the price is it right? Is very important, its quality and its function, no matter how many. Even if there are so many colors, style and design, conformity is the best. So be careful, if you pick the right pair for myself!