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

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。

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.