What problems should be paid attention to when choosing sunglasses

u003cbru003eHave you heard of 'sunglasses syndrome'? It does exist, and it often appears in some fashionable young people. After wearing sunglasses for 1 to 2 weeks, symptoms such as skin numbness and unconsciousness will appear in the eye sockets or between the cheeks, and the nose will feel uncomfortable when breathing. It is like a cold, and some people may also feel that there are small bugs. Crawling on the face, sore eyes, etc. This is because they often wear glasses with wide sides, thick frames, and heavy weights. In addition, some people like to wear sunglasses, regardless of time and occasion, outdoors or indoors, even at dusk, watching movies, and watching TV. This will increase the burden on the eyes, cause eye muscle tension, blurred vision, and in severe cases. Symptoms such as dizziness, dizziness, and inability to see for a long time may also occur. These symptoms are caused by the abuse of sunglasses. Choosing a pair of healthy sunglasses To choose a good pair of glasses, in addition to paying attention to the style of sunglasses, the following three details cannot be ignored. 1. There is an anti-ultraviolet logo Anti-ultraviolet is the primary function of sunglasses. Some sunglasses have 'UV400' and 'UV protection' logos on their lenses or packaging. If you wear low-quality sunglasses that cannot block UV rays, more UV rays enter your eyes than when you don’t wear sunglasses, which will more easily cause eye damage. After a long period of time, it can cause cataracts, such as eye pain, corneal edema, and corneal epithelial shedding. . . The quality of spectacle lenses from street stalls and hawkers is often not up to standard, so it is best not to buy them. 2. Choose gray, brown and green lenses. The color of the lens should be based on the color of the surrounding environment without distortion, the edge of the object is clear, and the principle of effectively identifying different color signal lights. The colors of the lenses are gray, brown, and green because the lenses of these colors absorb infrared and ultraviolet rays better. 3. Medium-depth lenses Generally speaking, the darker the color of the lens, the stronger the shading effect, but it does not mean that the ability to prevent ultraviolet rays is stronger. The anti-ultraviolet function of sunglasses is also related to the lens material and technology. The lenses are generally medium-depth. Of course, if a strong shading effect is required, darker lenses should be selected. But cyclists or motorists should not choose too dark lenses, otherwise it will be difficult to recognize the color of traffic lights. When deciding to choose an angle to go out for activities, different occasions should choose different sunglasses. For example, some sports sunglasses, their frames are specially made to protect the eyes according to different needs, and can be worn comfortably and firmly, such as water skiing, skiing, mountain climbing, golf, and tennis. Sunglasses. For those who love golf and tennis, amber lenses can effectively increase the contrast and absorb blue light, which contributes to visual comfort during sports. It is best to wear swimming goggles with anti-UV treatment when swimming outdoors. It is best for drivers and fishing enthusiasts to choose polarized sunglasses, because polarized lenses can eliminate glare from all directions and make objects look clearer. Let sunglasses add points to beauty Generally speaking, different people will choose sunglasses according to different preferences and different uses, but the most fundamental thing is to start from the basic principle that can protect the wearer's eyes from damage. Reducing strong light irritation, clear vision without distortion, UV protection, color recognition without distortion, and accurate identification of traffic signals should be the basic functions of sunglasses. In addition, when buying sunglasses, you have to consider whether it matches your eye size, face shape, eyebrows, and nose. Large-frame glasses should be chosen for those with large eyes, and smaller ones for those with smaller eyes; a thicker frame is suitable for a round face, a round frame is suitable for a thin face, and a square frame with a slightly narrower upper and lower sides should be used for the flat round face. Who should not wear sunglasses as a highly decorative item, everyone likes to wear sunglasses, but not everyone is suitable for it. After wearing sunglasses, the visible light entering the eyes is reduced, and the pupils will naturally open. After a long time, it is easy to induce acute attacks of angle-closure glaucoma, and symptoms such as redness, eye pain, and sharp decline in vision appear. Therefore, people with glaucoma or suspected of having glaucoma should not wear sunglasses. In addition, children under the age of 6 are not suitable to wear sunglasses for a long time. Because their visual function development has not reached the adult level, wearing sunglasses for a long time may develop amblyopia.

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