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Hot progressive glasses especially for brilliant lady

04:49, 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. For that reason, we ought to care our eyes especially in hot summer.
Please don't look up into the sun. The eye is a delicate tissue. 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.
As everyone knows, eyes are sensitive to bright sunlight and can absorb ultraviolet radiation of any kinds. The 280-nm wavelength UV ray does the greatest injury to the cornea. It is likely to cause conjunctivitis.The UV rays with the wavelength of 290-400nm are harmful to lens, which 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. Then what should we do in preventing the harm?
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's important to note that the bifical sunglasses should be good in respect of quality. 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. It has been shown in much medical research that sunglasses of neutral density glass with grey lenses are best in blocking UV rays. It is better for contact lens wearers to buy anti-ultraviolet ones which cut 90% ultraviolet rays. If possible, you'd better wear progressive eyeglasses too.At noon, the sun is strongest and your skin and eyes are at highest risk. The best way to protect you is to keep indoors.
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