学龄期儿童不同直径范围内角膜非球面性特征的研究  

Anterior Corneal Asphericity characteristics of School-aged Children with Different Corneal Diameters.

作　　者：郭燕[1] 琚霄慧 夏哲人[1] 郑穗联[1] GUO Yan;JU Xiaohui;XIA Zheren(The Second Affiliated Hospital and Yuying Chi ldren′s Hospital of Wenzhou Medical University,Zhejiang 325000,China)

机构地区：[1]温州医科大学附属第二医院育英儿童医院,325000 [2]温州医科大学附属衢州医院,324000

出　　处：《医学研究杂志》2023年第3期61-65,共5页Journal of Medical Research

基　　金：浙江省基础公益研究计划项目(LGF21H120006);浙江省台州市科技计划项目(1901ky74)。

摘　　要：目的应用Pentacam眼前节分析仪测量学龄期儿童角膜形态,分析我国学龄期儿童在不同直径范围内角膜前表面Q值的分布特点。方法采用横断面研究方法,选取2018年10月~2019年12月于温州医科大学附属第二医院育英儿童医院眼科门诊就诊的6~13岁的学龄期儿童242例,按右眼等效球镜不同将其分成中度近视组(n=41)、低度近视组(n=93)、正视组(n=64)、低度远视组(n=26)、中度远视组(n=18);应用Pentacam眼前节分析仪获得6~10mm直径范围内的角膜前表面Q值,分析不同屈光组不同范围内角膜前表面Q值的差异和相关性。结果学龄期儿童6、7、8、9、10mm直径范围的角膜前表面平均Q值分别为-0.30±0.14、-0.34±0.13、-0.37±0.14、-0.41±0.14、-0.44±0.12,差异有统计学意义(F=42.263,P<0.001),角膜直径距离与角膜前表面Q值呈负相关(r=-0.350,P<0.001)。中度近视组、低度近视组、正视组学龄期儿童在6~10mm直径范围内的角膜前表面Q值比较,差异均有统计学意义(P均<0.001),中度远视组、低度远视组学龄期儿童在6~10mm直径范围内的角膜前表面Q值比较,差异均无统计学意义(P均>0.05)。各屈光组在6~9mm直径范围内的角膜前表面Q值比较,差异均有统计学意义(P均<0.001),均与等效球镜呈负相关(6mm:r=-0.300,P<0.001;7mm:r=-0.271,P<0.001;8mm:r=-0.249,P<0.001;9mm:r=-0.206,P<0.001),各屈光组在10mm直径时的角膜前表面Q值趋于一致(P>0.05)。结论学龄期儿童角膜前表面非球面性随着距角膜中心距离的增大而增大;在6~9mm直径范围内的角膜前表面非球面性随着等效球镜的增大而增大,10mm直径时各屈光组非球面性趋于一致。Objective To measure corneal morphology of school-aged children by Pentacam anterior segment analyzer and analyze its distribution characteristics of anterior corneal Q values in different diameters.Methods Two hundred and forty-two children aged form6 to 13 years who were admitted to the Department of Ophthalmology Outpatient,the Second Affiliated Hospital and Yuying Children′s Hospital of Wenzhou Medical University from October 2018 to December 2019 were selected in this cross-sectional study.The children were divided into 5groups according to the spherical equivalent of the right eye:41 eyes moderate myopia,93 eyes low myopia,64 eyes emmetropia,26 eyes low hyperopia and 18 eyes moderate hyperopia.The Pentacam anterior segment analyzer was used to measure the anterior corneal Q values with 6-10mm corneal diameters.The difference and correlation were analyzed with different corneal diameters in different refractive status groups.Results The mean anterior corneal Q values of the cornea of school-age children with 6mm,7mm,8mm,9mm and 10mm diameters were-0.30±0.14,-0.34±0.13,-0.37±0.14,-0.41±0.14 and-0.44±0.12,respectively,and the differences were statistically significant(F=42.263,P<0.001),corneal diameters was negatively correlated with the Q values of the anterior surface of the cornea(r=-0.350,P<0.001).The anterior corneal Q values of the school-age children in the 6-10mm corneal diameters were statistically significant in the moderate myopia group,low myopia group and emmetropia group(P<0.001),but there were no statistically significant in anterior corneal Q values between the moderate hyperopia group and the low hyperopia group(P>0.05).The anterior corneal Q values with 6-9mm corneal diameters varied statistically in all refractive status groups(P<0.001),and were negatively correlated with spherical equivalent(P<0.001).The anterior corneal Q values with 10mm corneal diameters tended to be consistent in all refractive status groups(P>0.05).Conclusion The anterior corneal asphericity of school-aged child

关 键 词：角膜非球面性 直径 学龄期儿童 屈光不正 

分 类 号：R779.7[医药卫生—眼科]