The disease is a myopic refractive disorders visual function and occupy a significant position in the group of visual disabilities, particularly students and young workers. The ill-sighted eyes visible when objects near and distant objects look blurry when the eye. According to the World Health Organization, there are over 800 million people infected myopia. The disease reduces myopia vision for humans, obstruct, difficulties in daily work. School children from 7-16 years of age are more susceptible to disease myopia, nearsightedness that the disease progressed rapidly due to the level of work look almost as many eyes this is a dangerous thing for myopic patients as soon as they appear increase the level of greenhouse faster.
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