The health blind spot sunglasses

Summer, colorful sunglasses to the busy city adds a beautiful landscape, sunglasses not only beautify people's lives and, more importantly, its eyes have a protective effect, many people have multiple pairs of sunglasses, so it into Decorations in the summer life of some people. However, regardless of the Discount Oakleys sunglasses decorative how strong it is a special feature of the glasses, the people should have some knowledge of the scientific selection and wearing sunglasses.

Election sunglasses leaed

In the strong rays of the summer sun, the first contraction of the pupil of the human eye, the eye will unconsciously narrowed over time will produce visual fatigue, dizziness discomfort. Wear quality sunglasses will give your eyes excellent protection. Sunglasses lenses on the market are broadly divided into polarized lenses, colored lenses and color lenses three. Buy sunglasses, we must first check the quality of the lens. Sunglasses can be placed in the eye 40cm-45cm at the objects observed through the lens, found linear distort or swing the case, the deformation of the lens, not to buy; lens facing up into the fluorescent and gently tu; there is discomfort when they do not buy. Furthermore, we should pay attention to the color of the lens. The color should not be too shallow, because it caot resist the strong light. A good sunglasses uv-400 "shall be marked with the words, and indicate the production of brand, size, site. Discount Oakley Sunglasses is only appropriate under the hot sun wearing, sunset, cloudy, rainy, indoor should not wear.

Inferior sunglasses against

Sunglasses can block UV rays, because it added a special coating on the lenses. After lens coating, barrier, absorb UV light, while also blocking a part of useful light, light transmission lens has declined. Good quality sunglasses, the ability to block UV rays is strong, but not much decline in light transmission, a less degree of effect objects, and lens coating has a certain degree of hardness, the surface is easy to wear. Contrary to low-quality sunglasses, lens transparency decrease and wearing Sun-glasses, eyes as if seen in a dark room, pupils will get larger, residual ultraviolet will mass into the eye, damage to the eyes.

Buy Oakley Sunglasses Discount, have to go to the regular optical shop and branded weary shop. Also, note that the colored glasses does not necessarily block UV addition lenses coated with anti-UV film can be used as sunglasses.