目的:分别用Pentacam与角膜超声测厚仪测量人眼LASIK手术后角膜厚度的变化并做比较。方法:应用Pentacam和日本尼德克公司生产的UP-1000角膜超声测厚仪对267例近视眼患者进行LASIK术后1,3,6mo角膜厚度观察。结果:Pentacam与超声测厚仪所测厚度进行直线相关分析:相关系数r=0.985,P<0.01,两种测量方法的结果存在正相关。两种方法测量LASIK术后角膜厚度比较,差异不具有统计学意义(P>0.05)。结论:Pentacam三维眼前节分析仪测量中央角膜厚度方法准确,简便,无创性,更适用于LASIK手术后角膜厚度的临床检查及科研研究。

AIM:To compare the difference in central corneal thickness(CCT) measurements after laser in situ keratomileusis(LASIK) using Pentacam system and A-scan ultrasound pachymetry.METHODS:Pentacam system and A-scan ultrasonic pachymeter were used to measure the corneal thickness on 267 myopic cases(267 eyes)undergoing LASIK 1 month,3 months and 6 months after the operation.Then the results were compared.RESULTS:The differences between the instruments were evaluated with paired t-test.The correlation between the measurements was evaluated using Pearson correlation coefficients.Of the 267 eyes,the CCT values of the two methods were positively related by linear correlation analysis(r=0.985,P<0.01),and the CCT of the two methods 1 month,3 months and 6 months after LASIK had no statistically significant difference(P>0.05).CONCLUSION:Pentacam system can measure the CCT easily,accurately and without any invasion.It is more fit for people after LASIK to monitor the corneal changes with time and for people to do more deep research.

R779.63