u003cbru003eIn the hot summer, many people wear sunglasses
, which can protect their eyes and are more fashionable. However, if the lens is not selected properly, it will cause retinopathy. The doctor suggested that it is better to choose sunglasses of gray, brown and other colors to play a protective role, and avoid choosing blue lenses. According to a report by Taiwan TV News Network on July 4, doctors suggested that the darker the color of the sunglasses, the better, and that there are colors that you absolutely cannot choose. When buying sunglasses, you must recognize that there is a UV400 logo on the trademark. You can also take the glasses to a special institution for UV protection testing. Wu Jianliang, director of the Department of Ophthalmology, Wanfang Hospital in Taiwan, said that ultraviolet light is abbreviated as UV. If the two light waves of UVA and UVB are irradiated to the human body for a long time, they will not only cause skin sunburn and skin cancer, but also damage the cornea, retina and vitreous of the eye, because it is invisible light , It is easy to invisibly accumulate damage to the eyes, which will cause cataracts, macular degeneration and other problems in the long term. Studies have shown that long-term exposure to UVB light waves will increase the risk of cataracts by three times, and may cause other eye diseases and even blindness. The key to eye protection for sunglasses lies in whether the lenses can effectively block ultraviolet rays. Gray, dark green, and brown lenses are currently recognized as having a protective effect, while other colors are mostly 'not good for use' and even cause more damage to the eyes. Dr. Janet Sparrow, professor of ophthalmology at Columbia University Medical Center in New York, suggests that you should not choose blue lenses when choosing sunglasses. Dr. Sparrow is studying the relationship between exposure to blue light from the sun and eye diseases that cause blindness. She said: 'As we age, some photosensitive compounds in some retinal cells will increase, and the wavelength of the blue part of the spectrum can activate these compounds to the greatest extent and promote harmful free radicals (the harmful ones produced in the body's oxidation reaction). The release of compounds). Blue lenses will pick out harmful blue light into the eyeballs, while yellow and amber lenses can filter blue light to prevent it from harming the eyes.'
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