角膜曲率计测量的角膜散光与静态总合眼散光在病理性散光儿童中的对照研究  

The control study of corneal astigmatism measured by keratometer and total astigmatism in cycloplegic eyes among children with pathological astigmatism

作　　者：钟江涛[1] 许江涛[1] 马艳玲[1] 郝玉星[1] 

机构地区：[1]昆明市儿童医院眼科,650034

出　　处：《中国斜视与小儿眼科杂志》2012年第3期97-99,109,共4页Chinese Journal of Strabismus & Pediatric Ophthalmology

摘　　要：目的明确在散光儿童中通过角膜散光预测总合眼散光的可靠性,证实角膜曲率计行儿童子午线弱视初步筛查的可行性。方法随机抽取1005名（1910只眼）4-8岁的病理性散光儿童,比较用角膜曲率计测定的角膜散光与用阿托品眼膏行睫状肌麻痹后静态检影测定的总合眼散光之间的差异。结果 （1）角膜散光绝对值与总合眼散光的绝对值呈直线正相关关系,相关系数r=0.771（P〈0.001）。（2）按角膜散光度的高低分为5组（组间散光值跨度为1D）,组1（散光值为0-0.99D）的角膜散光度均值较总合眼散光度均值低0.27D（P〈0.05）,组5（散光值≥4D）的角膜散光度均值较总合眼散光度均值高0.43D（P〈0.05）,其它各组的角膜散光度均值与总合眼散光度均值间差异无统计学意义（P〉0.05）。结论通过角膜曲率计测量的角膜散光度可以预测总合眼散光程度,角膜曲率计用于大面积筛查初步了解儿童的散光状态并对儿童子午线弱视进行初步筛查具有可行性。Objective The study aims to make clear the reliability of corneal astigmatism predicting total astigmatism in cycloplegic eyes among children with astigmatism, and to confirm the feasibility of preliminary screening of meridional amblyopia among children by keratometer. Methods Conduct the study in a random sample of 1005 4 - 8 -year-old children （ with 1910 single eyes） with pathological astigmatism. Compare the difference between the corneal astigmatism measured by keratometer and the total astigmatism measured by static retinoscopy after cycloplegia with atropine eye ointment. Results （ 1 ） The absolute value of corneal astigmatism has a positive correlation with the absolute value of total astigmatism in cycloplegic eyes, correlation coefficient r=0. 771 （P〈0. 001 ）. （2）Divide the samples into 5 groups according to the level of corneal astigmatism（ the interblock astigmatism span is 1D ）. The average astigmatism value in Group 1 （Astigmatism value,0 -0. 99D） is 0. 27D lower than the average total astigmatism value（ P〈0. 05 ）. The The average astigmatism value in Group 5（ Astigmatism value, I〉 4D ） is 0. 43D higher than the average total astigmatism value （P 〈 0.05 ）. The differences between the average astigmatism value and the average total astigmatism value from other groups are not statistically significant. （P 〉 0. 05 ）. Conclusions The total astigmatism level in cycloplegic eyes can be predicted through measuring corneal astigmatism value by keratometer. The keratometer can be used to preliminary screen and find the children＇s astigmatism status in a large scale, and can be used to preliminarily screen the meridional amblyopia among children.

关 键 词：儿童 子午线弱视 角膜散光 静态总合散光 

分 类 号：R778.13[医药卫生—眼科]