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Recommended Types of Sunglasses

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 Most of the sunglasses are designed to protect our eyes from the harmful effects of the sun. The labels on sunglasses usually protect against UV rays and other types of natural radiation. It's important to know what kind of light is needed to protect your eyes, and what types of light are not necessarily harmful. Blocks 99% of UV rays It would be best if you always bought sunglasses with this feature. Long-term exposure to ultraviolet (UV) radiation in the sun has been linked to cataracts and eye growth, including cancer. UVB radiation is considered more dangerous to the eyes and skin than UVA radiation. Both plastic and glass lenses absorb some UV rays, but UV absorption can be improved during manufacturing by adding chemicals to the lens material or by using special lens coatings. Look for sunglasses that block 99% or 100% of UV rays. Some manufacturers' labels say "UV absorbs up to 400 nanometers." This is the same as 100% UV absorption. Ground and Polished Some o...
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Can you wear normal glasses for sports?

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For office workers who sit in the office for a long time during the day, running is a simple exercise for fitness and relaxation. Office workers mostly use night  running because they need to work during the day. But for myopic runners, vision problems when running at night are indeed a big problem. Most runners still wear  ordinary glasses or contact lenses directly while running, while a small number of runners will wear contact lenses + ordinary sports glasses. For running, the above  method is not desirable. Contact lenses are easy to dry and crack after a long period of wind, and even cause physical damage to the cornea. Long-term or continuous wearing of contact lenses may keep the cornea in a state of continuous hypoxia, which will cause corneal epithelial edema and erosion. If  bacteria or viruses exist, it may lead to keratitis and even corneal ulcers. " However, ordinary glasses have low safety performance of their frames and lenses, lack of protective perf...
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