Pentacam三维眼前节分析诊断系统对近视眼眼前节的测量  

Measurement of anterior segment in myopic eyes with Pentacam scheimpflug system

作　　者：何燕玲[1] 元力[1] 黎晓新[1] 胡亦文[1] 

机构地区：[1]北京大学人民医院眼科,100044

出　　处：《眼科研究》2007年第11期872-874,共3页Chinese Ophthalmic Research

摘　　要：目的分析Pentacam三维眼前节分析诊断系统对近视眼眼前节各部位的测量结果,为临床使用提供依据。方法对50只正常眼连续进行3次Pentacam检查,评价该系统测量结果的可重复性。523例(1024眼)按等效球镜分为正视眼组、低度近视组、中度近视组和高度近视组,分别测量眼前节各部位并对结果进行分析比较。结果50只正常眼各部位测量结果的变异系数由小到大依次为角膜前表面屈光力、后表面屈光力、角膜顶点厚度、前房轴深、角膜容积、前房容积、前房角度和瞳孔直径。1024眼测量数据显示:随着屈光度增加,角膜前表面屈光力增加,而瞳孔直径逐渐减小,其余指标均与屈光度的变化无关。结论用Pentacam系统进行眼前节各部位测量,结果准确全面,使用方便,具有较好的临床应用价值。Objective To compare the biological parameters of normal and myopic eyes with Pentacam system and establish the preliminary data of various degree of myopic eyes. Methods Repeatability was determined from 3 successive measurements of 50 healthy eyes with Pentacam system, Pentacam scheimplug imaging system was used to measure the anterior segment on 523 cases （1 024 eyes）. Measured eyes were divided into emmetropia （240 eyes） ,low myopia （280 eyes） ,moderate myopia（272 eyes） and high myopia （232 eyes） according to the mean spherical equivalent. Results The variations of ocular anterior segment were as follows in 50 healthy eyes： coefficient of cornea anterior keratometry 0. 30% , posterior keratometry 0. 64% ,corneal apical pachymetry 0. 70% , central anterior chamber depth （ACD） 0. 70% , cornea volume 0. 81% , anterior chamber volume 1.98% ,anterior chamber angle 2. 68% ,pupil diameter 4. 73%. The anterior keratometry elevated from （43.34 ± 1.46） D to （43.83 ± 1.28 ） D and pupil diameter decreased from （ 3.13 ＋ 0. 65 ） mm to （2. 92 ± 0. 43 ） mm with the increase of myopic diopter of eyes（ P 〈0. 05 ,P 〈0.05 ）. The other biometric data had no statistically significant difference among the four groups（ P 〉 0.05 ）. Conclusion Pentacam scheimpflug system can provide rapid, simple and accurate measurement to ocular anterior segment,which is helpful in establishing standards of anterior segment of eyes.

关 键 词：眼前节 屈光度 PENTACAM系统 近视 

分 类 号：R778.11[医药卫生—眼科]