目的了解近视眼近视弧形斑的出现率及其近视度、视轴长度；
Objective To study the occurrence rate of comus and the relation between comus and the degree of nearsightedness and the length of optical axis;
目的了解近视眼近视弧形斑的出现率及其近视度、视轴长度；
Objective To study the occurrence rate of comus and the relation between comus and the degree of nearsightedness and the length of optical axis;
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