Figure 3From: Retrospective analysis of changes in the anterior corneal surface after Q value guided LASIK and LASEK in high myopic astigmatism for 3 years The mean AST at year 3 after surgery. The postoperative mean AST was 1.041 ± 0.38 in the LASIK group and 0.78 ± 0.45 in the LASEK group, with a statistically significant difference (P < 0.005). But there were no significant differences in changes of AST between the two groups.Back to article page