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Popular progressive glasses specially for spandy ladies

04:50, 29 July 2009 .. 0 commenti .. Link
Generally speaking, people tend to associate sun protection with skin instead of eyes. In practice, researches indicate that eyes exposure to ultraviolet radiation will do injury and even cause diseases to eyes. Thus, delicate eyes need our special care in heat summer days.
Never direct view sun, especially when it is strong. Eyes are extremely weak. If one looks at sun directly for a moment, he/she may be dizzy to watch. If one looks at sun directly for a long time, he/she is likely to get eye pain, tears, inflammation and blurred vision.
As is well known, eye is a delicate tissue that is sensitive to UV rays. It can absorb UV rays with various wavelengths. The 280-nm wavelength UV ray does the greatest injury to the cornea. It is likely to cause conjunctivitis.The 290-400nm ultraviolet radiation does damage to the lens and would result in cataract. Studies suggest one is more likely to get cataract if he/she roasts in the sun more. 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 glasses which prevents direct sunlight to eyes. It is worth notice that only quality bifical sunglasses are good to your eyes and effective in protection. Sunglasses of poor quality can't help in protection but result in injury to eyes. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. 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. If you wear contact lenses, you can choose those with anti-UV function which can block 90% ultraviolet rays.It will be better to wear a pair of progressive eyeglasses.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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