摘要
目的比较Pentacam三维眼前节分析系统与A超角膜测厚仪测量正常人中央角膜厚度的差异,并研究Pentacam系统与A超测量正常人眼表面麻醉前后中央角膜厚度的变化,为临床角膜屈光手术方式的选择提供参考。方法对25例(50眼)正常人分别应用Pentacam系统及A超角膜测厚仪测量中央角膜厚度,Pentacam系统的测量时间包括使用表面麻醉药前及使用表面麻醉药后,并对检查结果进行统计学分析。结果使用表面麻醉药前Pentacam系统和A超测得的中央角膜厚度分别为(544.50±26.24)μm和(544.84±28.02)μm,两种方法测量的结果差异无统计学意义(P>0.05),两种测量结果之间具有密切相关性(P<0.001)。Pentacam系统测量正常人在表面麻醉前后中央角膜厚度结果差异有统计学意义(P<0.01),表面麻醉后的厚度为(549.76±27.09)μm,表面麻醉前后测量结果具有密切的相关性(P<0.001)。A超表面麻醉前后测量差异无统计学意义(P=0.765)。结论用Pentacam三维眼前节分析诊断系统进行中央角膜厚度的测量,结果准确、全面、方便,具有较好的临床应用价值;Pentacam系统测得的麻药前后中央角膜厚度有变化,表面麻醉后所测得的中央角膜厚度较表面麻醉前略增加,不具显著临床意义,对临床角膜屈光手术方式的选择无明显影响。
Objective To compare the difference of central corneal thickness（CCT）in normal eyes between A-ultrasound pachymetry and the Pentacam scheimpflug,discuss the changes of CCT before and after topical anesthesia with Pentacam scheimpflug system and A-ultrasound and provide the reference for the option of refractive surgery.Methods The CCT of 50 healthy eyes form 25 normal subjects were measured with A-ultrasound pachymetry and Pentacam scheimpflug system,the CCT before and after topical anesthesia were also measured by Pentacam scheimpflug system and A-ultrasound.The results were statistically analyzed.Results The CCT values obtained with Pentacam scheimpflug system and A-ultrasound pachymetry before topical anesthesia were（544.50±26.24）μm and（544.84±28.02）μm,respectively,there was no significant difference（P0.05）and a high correlation between them（P0.01）.Also,the mean CCT values measured by Pentacam scheimpflug system after topical anesthesia was（549.76±27.09）μm,the difference was significant compared with that before topical anesthesia（P0.01）,there was a high correlation between them（P0.001）.There was no difference in CCT measured by A-ultrasound pachymetry before and after topical anesthesia（P=0.765）.Conclusions Pentacam scheimpflug system can provide accurate,full-scale and convenient method to CCT measurement,which is helpful in clinical application.The CCT values after topical anesthesia are little thicker than the CCT values before topical anesthesia with Pentacam scheimpflug system,although the difference is not significant,when come to the clinical application value,it wouldn＇t affect the option for refractive surgery.
出处
《眼科新进展》
CAS
北大核心
2011年第1期68-70,共3页
Recent Advances in Ophthalmology
