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庞大的近视人群所催生的巨大需求据(2011年)我国第六次人口普查结果显示,全国总人口逾13.7亿,其中居住在乡村的人口为67415万人,占50.32%,加上2856个县级行政区划单位(包括县级市和区)主城区的人口,县级城市所覆盖的人口数量极为庞大。仅以县级城市主城区为例,目前我国2000多个县级城市中,主城区人口达到10万~20万的就有195个,如果按照若干年前颁布的大中小城市划分标准(人口10万~50万的为中等城市),这些城市早已跻身中等城市行
According to the results of the Sixth Census of China (2011), the total population in China is over 1.37 billion, of which 674.15 million are people living in rural areas, accounting for 50.32%. Coupled with 2856 counties The population of the main urban areas at the administrative division units (including the county-level cities and districts) and the county-level cities cover a very large population. For example, in the main urban areas of county-level cities, at present, of the more than 2000 county-level cities in China, there are 195 cities with a population of 100,000 to 200,000. According to the criteria for dividing large, middle and small cities promulgated a few years ago (population 10 Million to 500,000 for the medium-sized cities), these cities have long been among the medium-sized cities