Chose a pair of sunglasses, shine the summer
Summer takes control over the city without a warning. Do you feel that the sunshine is so bright that you can't open your eyes? It's high time for you to choose a pair of sunglasses and protects your eyes from the unmerciful summer sunshine.
Most people think put on a pair of colored glasses may protect their eyes, which is fundamentally wrong. A pair of colored glasses may only reduce the absorption of visible light; it can't prevent the ultraviolet ray at all. While an ideal pair of sunglasses can filtrate over 96% of the ultraviolet ray. Choose a pair of sunglasses is not so easy; it needs abundant knowledge in glasses.
Firstly, you have to make sure your purpose to choose a pair of sunglasses. There are three types of sunglasses, sun mirror, light colored sunglasses, and sunglasses for special use. Sun mirror is used to keep your eyes out of the sunshine, and lesson the fatigue by the adjustment to the sunshine. Light colored sunglasses don't have a good prevention as the sun mirror. But it has a full collection of colors which can suit your clothes and show yourself, the young and the fashion lovers may prefer this kind of sunglasses. The sunglasses for special use may satisfy more exacting demands. It has an excellent ability to prevent the ultraviolet ray, can be used on the beach, in the snow mountains or in the dessert where the sunshine is stronger.
Secondly, you have to acquire knowledge of the labels with the sunglasses. The labels may inform you of the UV resistance，safety. You may confront with "UV400", "prevent 100% ultraviolet ray", "UV resistance", or "shock resistance", "FDA", "in line with the highest standards of Europe and United States". A good understanding of these labels may ensure you a perfect pair of sunglasses to your own use. You can find more information in this professional glasses website www.glassesshop.com, I have most of my reference on this website.
Thirdly，a basic technique to identify the quality of the glasses of the sunglasses is very important. The easiest way is to put the sunglasses in front of your eyes, observe an object faraway, then move the glasses, the object shouldn't move or and change in shape. The color of the glasses should not change the color of the objects; the wearer should be able to tell the shape of the objects and traffic lights. If you choose a pair of sunglasses for driving or riding, don't choose glasses with too deep color.
These are the three principles for choosing a pair of sunglasses. Follow my advices, you can choose a pair of sunglasses suits your eyes best. Choose a pair of sunglasses, shine the summer.