Sunglasses were originally used as shading, also known as sunshade, generally has the ability to prevent strong light, ultraviolet rays and glare and other functions, can reduce the fatigue of the eye and the damage caused by light, belonging to the category of personal eye protection supplies, now sunglasses in the appearance of the design does not upgrade, sunglasses have become a fashion trend wind, Personality fashion elements and sunglasses combined to let more people fondle admiringly.
In fact, in sunglasses market, sunglasses can be divided into many types, different types of sunglasses on ultraviolet rays, strong light, Sunglasses glare of the protection of the role is not the same, and the polarizing sunglasses are more popular with consumers, especially drivers friends, choose a polarizing sunglasses will often have a better, clearer and healthier vision. However, Sunglasses a lot of friends wearing sunglasses are too, for the maintenance of sunglasses do not pay attention. But not surprisingly, the maintenance of sunglasses can not only extend the use of sunglasses, but also to better ensure the eye protection of sunglasses.
Sunglasses maintenance and the maintenance of ordinary glasses the same, regular cleaning, correct storage must form good habits. Because the sunglasses indefinite time cleaning, the box side is easy to accumulate dirt, with paper or nail scraping is not the correct approach, easy to bruise sunglasses products. Second, many friends do not need to wear sunglasses, often the sunglasses hanging on the head, neckline, pockets, or car seat, desk, handbag, etc., these storage methods are easy to scrape or crash sunglasses, Sunglasses experts suggest that sunglasses should be better placed in the relative glasses box or not easy to damp drawer.
Sunglasses must have four characteristics
One, sunglasses can prevent glare, when the eye receives too much light, it will naturally shrink the iris. Once the iris shrinks to its limit state, then people need to squint. If the light is still too much, such as the sunlight reflected in the snow, will damage the retina. Sunglasses High-quality sunglasses can filter up to 97% of the eye light to avoid damage.
Second, sunglasses can prevent ultraviolet rays in sunlight, ultraviolet rays can damage the cornea and retina, high-quality sunglasses can eliminate most of the ultraviolet radiation.
Third, sunglasses can prevent glare, some surfaces, such as water, can reflect a large amount of light, and the resulting highlights will disturb the sight or hidden objects. Sunglasses High quality sunglasses can use polarizing technology to eliminate such glare, we will introduce polarizing technology later.
Four, sunglasses can eliminate the specific frequency of light, certain frequencies of light will blur the line of sight, Sunglasses while other frequencies of light can enhance contrast. Choose the right color for the sunglasses and make it better in a particular environment.