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近视眼是目前最常见的疾病之一,中小学是其高发阶段。据资料表明,苏联近视眼患病率在10~20%;美国约有7000万人患有近视,
Myopia is one of the most common diseases, primary and secondary schools is the high stage. According to statistics, the prevalence of myopia in the Soviet Union in 10 to 20%; about 70 million people in the United States with myopia,