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Hot bifocal eyeglasses match with remarkable girl

04:49, 29 July 2009 .. 0 commenti .. Link
People think of sun protection as skin protection, seldom have eye protection in mind. Instead, surveys show that ultraviolet radiation is the main cause of some eye diseases, such as keratitis, cataracts, retinal damage. So, we can't ignore the eye injury caused by ultraviolet radiation.
Please don't look up into the sun. Eyes are very fragile. Short-term direct view to sunlight will result in an immediate shadow in eyes.One may suffer from pain, tears, inflammation and blurred vision if he/she looks up to sun for a long time.
It is well known that eyes are the most sensitive part to the ultraviolet radiation and they can widely absorb UV rays of different wavelengths. The UV rays with the wavelength of 280nm are most harmful to the cornea, which would result in conjunctivitis. The 290-400nm ultraviolet radiation does damage to the lens and would result in cataract. Research indicates the risk to suffer from cataract rises by 10% if one more hour every day people expose to the sun. Well then, I'd like to tell you some preventive measures.
When you go out in hot summer days, you must bring hat, parasol and bifical eyeglasses with you for sun protection use. It should be noted that you'd better buy a pair of bifical sunglasses of good quality. Sunglasses of poor quality can't help in protection but result in injury to eyes. You'd better choose a pair of quality sunglasses that can block UV rays. Medical research shows that it is unnecessary to choose lenses with too dark color. Grey and light grey are more effective in blocking UV rays. It is better for contact lens wearers to buy anti-ultraviolet ones which cut 90% ultraviolet rays. It would be safer to add a pair of progressive eyewear. The sun is strongest at noon, which is harmful to both your skin and eyes. You'd better stay at home without going out.
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