干眼症对角膜地形图角膜厚度检测结果的影响

Effect of dry eyes on corneal thickness measurement with Pentacam imaging system

摘要:

目的:探讨干眼症对Pentacam三维眼前节分析仪角膜厚度检测结果的影响。方法:利用Pentacam三维眼前节分析仪及A超对有干眼症的30例患者进行检测,记录治疗前后的角膜厚度,采用SPSS11.5统计分析软件处理检测数据,用配对t检验分析治疗差异,以P<0.05为有统计学意义。结果:干眼症患者治疗前Pentacam三维眼前节分析仪测得的角膜厚度范围428～557μm,均值为504.5±37.3μm,A超角膜测厚仪测得的角膜厚度范围477～596μm,均值为532.7±32.4μm。两种测量方法所得数值差异有统计学意义(P<0.05)。治疗后Pentacam三维眼前节分析仪测得的角膜厚度范围469～607μm,均值为541.2±41.1μm,A超角膜测厚仪测得的角膜厚度范围472～593μm,均值为538.4±30.7μm。两种测量方法所得数值差异无统计学意义(P>0.05)。结论:干眼症会对Pentacam眼前节分析仪的角膜厚度测量结果产生影响,对有干眼症的患者,应在给予适当治疗后进行厚度评估,以便取得更精确的厚度信息。

Abstract:

AIM:To investigate the effect of dry eyes on corneal thickness measurement with Pentacam imaging system.METHODS:Totally 60 dry eyes 30 cases were enrolled in this study.The Pentacam imaging system and ultrasound was used for each eye,corneal thickness was examined and compared before and after treatment.RESULTS:The corneal thickness was 504.5±37.3μm in dry eyes(ranged from 428 to 557μm)with Pentacam imaging system and 532.7±32.4μm(ranged from 477 to 596μm)with ultrasound,the difference between two measurement methods was significant(P<0.05).After treatment,the corneal thickness was 541.2±41.1μm(ranged from 469 to 607μm)with Pentacam imaging system and 538.4±30.7μm(ranged from 472 to 593μm)with ultrasound,the difference between two measurement methods was not statistically significant(P>0.05).CONCLUSION:The dry eyes have significant effect on corneal thickness measurement with Pentacam imaging system.It should be treated in order to obtain accurate results.