目的:通过对LASIK和LASEK两种手术前后眼脉动振幅(ocular pulse amplitude,OPA)值的对比分析,探讨两种手术对脉络膜血流的影响。方法:对行LASIK或LASEK手术的患者各20例39眼于术前和术后1mo常规检查验光后用Pentacam系统检查中央角膜厚度(CCT)和角膜曲率(CCV),用动态轮廓眼压计进行眼压(IOP)和OPA值测量,将测量结果进行统计学分析。结果:LASIK和LASEK两组病例术前和术后1mo各自的OPA值比较差异无统计学意义(P>0.05),两组病例之间术前和术后1mo的OPA值差异亦无统计学意义(P>0.05)。结论:LASIK和LASEK手术对脉络膜血流未产生明显影响。

AIM:To evaluate the effect of laser in situ keratomileusis(LASIK) and laser subepithelial keratomileusis(LASEK) on the choroidal blood flow by comparing and analyzing the ocular pulse amplitude(OPA) values before and after LASIK and LASEK·METHODS:After routine check all patients were devided into two groups and each group had 20 patients(39 eyes).After measured central corneal thickness(CCT) and corneal curvature(CCV) by Pentacam system,the two group patients which would be treated by LASIK or LASEK operation were measured intraocular pressure(IOP) and OPA by the dynamic contour tonometry(DCT) before operation and one month after operation.Finally the statistical analysis were adopted to evaluate the measurement results·RESULTS:There was no statistical difference between the OPA values of the LASIK patients or the LASEK patients before and after operation(P>0.05),and the OPA values had no statistical difference between the LASIK patients and the LASEK patients before and one month after operation(P>0.05)·CONCLUSION: LASIK and LASEK operation don’t affect the choroidal blood flow.

R779.63