近视可以分成兩類，一是屈光性近视（Refractive Myopia）， 是由于眼睛各屈光成分的改变而使影像落焦在视网膜前，例如角膜屈 光度太大（也就是角膜弧度太陡），球型水晶体，核性白内障，...
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Uncorrected refractive errors (myopia, hyperopia or astigmatism), 43 %.
未经矫正的屈光不正(近视、远视或散光)，43%。
Conclusion: the selection of refractive surgery in patients with myopia should be based on age, condition of the lens, degree of myopia, and monocular and binocular refraction.
结论：近视患者的屈光矫正手术的术式选择，应根据年龄、晶状体情况、近视程度和单、双眼情况，进行综合判断决定。
Objective: to observe the effect of concave and convex on growing and the refractive developing of guinea pig eyes and to establish lens-induced animal model of myopia or hyperopia.
目的：观察凹透镜和凸透镜对豚鼠眼球生长和屈光变化的影响，建立透镜诱导型屈光不正动物模型。
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