【摘要】 目的 了解青少年眼部屈光结构及屈光状态,为青少年近视防控工作提供科学依据。方法 对北京市西城区845名9～14岁中小学生进行视力、屈光状态检查,测量眼轴长度和角膜曲率,并按年龄、性别、屈光度分组,对各组眼轴长度及角膜曲率进行统计学分析。结果 不同屈光度组眼轴长度和角膜垂直曲率差异均有统计学意义(P值均<0.01),角膜水平曲率差异无统计学意义(P>0.05);不同性别组眼轴长度和角膜水平、垂直曲率差异均有统计学意义(P值均<0.01);不同年龄组间男生正视眼眼轴长度差异有统计学意义(P<0.05)。结论 9～14岁青少年近视以低度为主,眼轴增长是青少年单纯性近视形成的主要因素。

    【关键词】 屈光,眼;屈光不正;近视;对比研究;青少年

    【中图分类号】 R 179 G 478.2 R 778 【文献标识码】 A 【文章编号】 1000-9817(2009)09-0786-03

    Analysis of the Refractive State and Refractive Structure of 9-14 Years Old Teenagers/QIN Li-na. School Health Care Institute of Xicheng District in Beijing, Beijing(100037), China

    【Abstract】 Objective To study the initial and developing reasons of the anomalous visual acuity in youth in order to provide scientific basis for the prevention and control of juvenile myopia. Methods Visual acuity, refractive state, ocular axis length and corneal curvature were measured in 845 students of 9-14 years old. Statistical analysis on ocular axis length and corneal curvature was done between different groups according to age, sex and refraction.Results Ocular axis length and corneal vertical curvature (P<0.01)but not corneal horizontal curvature(P>0.05)were significantly different in different refraction groups. Ocular axis length and corneal vertical and horizontal curvature were significantly different between girls and boys(P<0.01). Between different age groups, ocular axis length in male emmetropia were significantly different(P<0.05). Conclusion Most of 9-14 years old myopia were moderate myopia,and axial growth is the main factor in development of juvenile simple myopia. ......