学龄儿童角膜非球面特性及相关因素研究  

Distribution characters of corneal asphericity and its related factors in school-age children

作　　者：李琦 王军[2] 李嘉[2] 

机构地区：[1]北京市隆福医院眼科 [2]首都医科大学附属北京同仁医院,北京同仁眼科中心,眼科学与视觉科学北京市重点实验室,100730

出　　处：《眼科》2016年第3期191-194,共4页Ophthalmology in China

基　　金：公益性行业专研专项(201302015)

摘　　要：目的了解学龄儿童角膜非球面光学特性及其相关因素。设计横断面研究。研究对象对北京市昌平区7所小学、初中、高中进行整群抽样,随机抽取学龄儿童（7~16岁）950名。年龄为（10.87±2.58）岁。方法采用Aladdin眼前节生物测量仪对儿童进行角膜Q值及眼部生物学测量,观察Q值的分布特征及其与眼部参数（眼轴、眼压、角膜曲率、球差等）和全身参数（年龄、性别、身高、体重）的相关性。主要指标角膜Q值、球差、慧差、角膜曲率、眼轴、眼压、角膜水平直径、前房深度。结果角膜Q值平均为-0.18±0.14,呈正态分布;Q值在性别（P=0.839）眼别（P=0.373）之间无统计学差异;与年龄（r=0.110,P=0.000）、身高（r=0.118,P=0.000）、体重（r=0.117,P=0.000）、球差（r=0.113,P=0.001）、慧差（r=0.087,P=0.009）呈正相关,其中7~11岁年龄段角膜Q值较12~16岁年龄段小（t=-5.51,P=0.000）;角膜Q值与角膜曲率、角膜水平直径、前房深度、眼轴、眼压无相关性（P均〉0.05）。结论学龄儿童角膜前表面形态呈长椭圆形,角膜Q值与年龄、身高、体重、球差、慧差呈正相关。Objective To study the distribution characters of corneal asphericity（Q-value） in school-age children and the related factors. Design Cross-sectional study. Participants Using a random cluster sampling method, in total 950 students from 7 schools in Changping district, Beijing aged between 7 to 16（10.87 ±2.58） were studied. Methods Aladdin anterior segment system was used to both obtain the Q-value and ocular biometry measurements of the children and conduct relevant analysis regarding distribution characters, ocular parameters（eye axis, intraocular pressure, corneal curvature, spherical aberration） as well as whole body parameter（agesex, height, weight）. Main outcome measures cornea Q value, spherical aberration, coma, corneal curvature, ocular axis, intraoculapressure, corneal horizontal diameter, anterior chamber depth. Results the mean Q value was-0.18±0.14 with normal distribution. ThQ values of different genders（P=0.839） and different eyes（P=0.373） were not statistically different. The Q values was correlated witage（r=0.110, P=0.000）, height（r=0.118, P=0.000）, weight（r=0.117, P=0.000）, spherical aberration（r=0.113, P=0.001）, coma（r=0.087P=0.009）. The Q values of children aged 7~11 group is significantly smaller than that of 12-16 group（t=-5.51, P=0.000）. No significanrelation was found between Q value and either sphere, corneal curvature, corneal horizontal diameter, anterior chamber depth, oculaaxis, and intraocular pressure（all P〉0.05）. Conclusion The morphology of the corneal anterior surface of school age children is ovalThe Q values is positively correlated with age, height, weight, spherical aberration and coma.

关 键 词：角膜Q值 儿童 角膜曲率 球差 慧差 

分 类 号：R77[医药卫生—眼科]