In the hot sun, most of the people walking on the street wear dark or light-colored sunglasses, especially fashionable young men and women. Sunglasses of various styles have become part of the summer decoration and are worn when the sun is shining. , Usually hanging on the body or worn on the head as a decoration, that can bring out their own temperament, but also able to withstand ultraviolet rays, killing two birds with one stone. A few days ago, the reporter conducted a survey of sunglasses with great differences in style prices on the market. Can they really protect their eyes?

Buy too casual do not look at the quality only see the style of a hot day, selling sunglasses in particular places. Large shopping malls, optical shops, and some fashion stores, even street stalls selling mobile phone chains or issuing cards, have sold sunglasses.

The reporter saw in some small shops and street stalls that the price of sunglasses is basically ranging from a dozen yuan to a few hundred yuan, and there are even cheaper ones. In some boutique optical shops, the most expensive branded glasses cost up to several thousand dollars.

In an interview, the reporter found that many young girls choose sunglasses simply to see if the style and color of the glasses are suitable for themselves or match their own clothes. Once you look satisfied, you get into your pocket. As for the quality of the sunglasses and their benefits for the health of your eyes, you rarely think about it. A young girl told reporters that she owns a total of seventy-eight pairs of sunglasses of different styles. Every summer, he adds a few pairs of popular styles, usually based on the clothes he wears on the day. These sunglasses have different prices, there are brand-name glasses bought in large shopping malls, there are also a few dozen dollars of sunglasses purchased on the street stalls. I can also feel that some glasses are clear and some are not very comfortable to wear, but they don’t care, as long as they are good-looking and fashionable. Some people think that the summer sun is too dazzling. Sunglasses are used for shading. It doesn't feel bad if you wear glasses, and you think that blocking the glare of light blocks UV rays. There are also many people who believe that the darker the sunglasses, the better their eye protection.

The reporter also found that most of the booth's sales staff did not introduce the performance of the sunglasses to the buyers, but introduced the style and price, emphasizing that their own spectacle lenses are UV-resistant resins.

Experts pointed to sunglasses, good and bad, to identify yesterday, the director of the Anjing Iron and Steel Co., Ltd. Tao Yongjian introduced ultraviolet radiation to the eyes of people is relatively large damage, people's eyes after long-term exposure to ultraviolet radiation, there will be tearing, photophobia and other performance, Ultraviolet rays can cause turbidity in the lens, which is the cause of cataract and retinal diseases. Therefore, it is necessary to wear UV-protective sunglasses in the summer when the UV is very strong.

So, is it really like some people think that, after wearing it does not feel blind to cover the UV? Is the darker the color of the sunglasses lens, the better it is to protect the eyes? In the choice of sunglasses, what kind of sunglasses can play a role in protecting the eyes? According to Zhang Xiaohua of the Light Industry Laboratory of the Anshan Product Quality Supervision and Inspection Institute, the quality of sunglasses is mainly determined by how much UV light is blocked and the degree of light transmission. Good quality sunglasses, strong ability to block ultraviolet light, and low light transmittance are not available. , does not affect the visual clarity. Lens coating has a certain hardness, the surface is not easy to wear. However, inferior sunglasses are completely different, not only do not block the performance of ultraviolet light, and the film is easily damaged, so that the degree of transmission is seriously reduced. The eyes look like in the darkroom. Zhang Xiaohua suggested that some low-priced sunglasses should not be purchased. Love beautiful girls do not choose just to pursue styles so as not to hurt their eyes.

Yesterday, experts said that the selection of sunglasses is actually very particular. First of all, we must check the quality of the lens, according to reports, the current market, the lens is divided into glass lenses and resin lenses. After inspection, the transmittance of the resin lens is better than the glass lens. When choosing sunglasses, observe whether the surface of the lens is smooth, without wear marks or bubbles. In addition, when you choose sunglasses, you must try more and choose to wear them with glasses that suit your face type. Wearing uncomfortable can also cause eye damage. In addition, sunglasses are classified into light-colored mirrors, sunshades, and the like according to the environment in which they are used, and they are worn in accordance with the environment in which they are used. For example, one kind of sunglasses that gradually fades in color from top to bottom is now popular, but it is not suitable to wear such sunglasses when riding a bicycle. Because people often have to look at the road conditions while riding, so that when they constantly change their eyes, the eyes receive different colors, which can easily lead to eye strain, dizziness and unclear sight, which may cause danger to driving. . When a driver drives a car, he wears polarized sunglasses, which can block the reflected light from the smooth and shiny surface, so that the driver’s vision is clearer and it is also conducive to safe driving.

Do not wear "plastic mirror" is easy to cause eye burns In addition, in some schools near the stalls or children's toys stalls, the reporter also found a toy-like sunglasses, glasses with transparent lenses and colored frames assembled Some children use it as sunglasses. Many young children like this kind of toy-like glasses and often wear it to play. It feels very ambitious. However, it is understood that the glasses are made entirely of plastic. On some of the stalls, sun hats made of dark transparent plastic plates were also sold for the brim. Some people used transparent caps as sunglasses when riding.

Yesterday, Zhang Xiaohua of the Light Industry Laboratory of the Product Quality Supervision and Inspection Institute of Anshan introduced that this kind of plastic lens is the most harmful to the eyes. The plastic lenses have poor light transmission and cannot block the ultraviolet rays, but they will absorb sunlight and cause burns to the eyes.

Wearing harmful parts may have "sunglass syndrome"

Although sunglasses have the function of protecting the eyes, experts have suggested that the time for wearing sunglasses should not be too long. Nowadays, many people use sunglasses as an ornament. They wear sunglasses for a long time regardless of time and occasion, outdoors or indoors. They wear sunglasses even when the light is not strong at dusk. In fact, this is harmful to the eyes. Although sunglasses have the function of protecting the eyes, they are not suitable for long-term wear. Because the visible light entering the eye through the sunglasses is reduced, the pupil of the human eye will naturally open and the resolution of the eye will be reduced. Wearing it for a long time will increase the burden on the eyes, causing blurred vision and other symptoms, and severe dizziness. Dazzled eyes, long-term vision, etc. are called "sunglasses syndrome" symptoms.

Director of the Department of Ophthalmology Tao Yongjin, director of the Department of Ophthalmology, said that people with a history of glaucoma, children with amblyopia, and people with eye diseases cannot wear sunglasses. The person with a history of glaucoma is in the dark. The pupil is open and it is easy to cause glaucoma. Sunglasses block the injection of sunlight and become a "darkroom" in the visual field, which can cause glaucoma attacks. In addition, children with amblyopia need more sunshine, wearing sunglasses is not conducive to treatment, will increase amblyopia.