我国是一个近视眼大国,不仅近视眼发病率高,而且高度近视所占比例也高,郭秉宽等[1]通过流行病学调查发现我国正常人群中高度近视的总发病率达6.98%。高度近视可出现白内障、青光眼、后极部及黄斑区视网膜萎缩等一系列并发症。其中白内障不仅发生早,且多数为核性白内障,晶体核硬 China is a large country of myopia, not only the high incidence of myopia, but also a high proportion of high myopia, Guobing Kuan et al [1] through epidemiological survey found that the incidence of high myopia in our normal population was 6.98%. High myopia can occur cataract, glaucoma, posterior pole and macular retinal atrophy and a series of complications. Including cataract occurs not only early, and most of the nuclear cataract, crystal nuclear hard