Faddish bifocal glasses for smart girl
Mention sun protection, most people think of skin protection, and rarely think of eye protection. Instead, surveys show that ultraviolet radiation is the main cause of some eye diseases, such as keratitis, cataracts, retinal damage. Hence, for health sake, eyes deserve our special attention.
Never look sun straightly in the sunny days. Eyes are very fragile. Short-term direct view to sunlight will result in an immediate shadow in eyes.If one looks at sun directly for a long time, he/she is likely to get eye pain, tears, inflammation and blurred vision.
As everyone knows, eyes are sensitive to bright sunlight and can absorb ultraviolet radiation of any kinds. The UV ray of 280nm wavelength damages the cornea most badly and it brings about the conjunctivitis. The 290-400nm ultraviolet radiation does damage to the lens and would result in cataract. Some studies have shown that if people expose to the sunlight for one more hour every day, the risk of cataracts will rises by 10%.So then what shall we do in daily life?
Wear a set of hat or employ a parasol when you go outside. Meanwhile you can wear a pair of bifical eyeglasses which prevents direct sunlight to eyes. What is noteworthy is that the quality of bifical sunglasses is very important to the health of eyes. If your sunglasses are poor in quality, your eyes will suffer instead of benefit. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. Medical search results have proved that grey lenses are the best choice; lenses of too dark color may pass more UV rays to eyes. People wearing contact lenses can buy UV-protective ones which are able to block 90% ultraviolet radiation. If possible, you'd better wear progressive eyeglasses too.You'd better not go outside at noon when the sun is strong and are likely to threat the security of skin and eyes.
Never look sun straightly in the sunny days. Eyes are very fragile. Short-term direct view to sunlight will result in an immediate shadow in eyes.If one looks at sun directly for a long time, he/she is likely to get eye pain, tears, inflammation and blurred vision.
As everyone knows, eyes are sensitive to bright sunlight and can absorb ultraviolet radiation of any kinds. The UV ray of 280nm wavelength damages the cornea most badly and it brings about the conjunctivitis. The 290-400nm ultraviolet radiation does damage to the lens and would result in cataract. Some studies have shown that if people expose to the sunlight for one more hour every day, the risk of cataracts will rises by 10%.So then what shall we do in daily life?
Wear a set of hat or employ a parasol when you go outside. Meanwhile you can wear a pair of bifical eyeglasses which prevents direct sunlight to eyes. What is noteworthy is that the quality of bifical sunglasses is very important to the health of eyes. If your sunglasses are poor in quality, your eyes will suffer instead of benefit. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. Medical search results have proved that grey lenses are the best choice; lenses of too dark color may pass more UV rays to eyes. People wearing contact lenses can buy UV-protective ones which are able to block 90% ultraviolet radiation. If possible, you'd better wear progressive eyeglasses too.You'd better not go outside at noon when the sun is strong and are likely to threat the security of skin and eyes.
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