marginal significancep = 0.084
Interestingly, 5-mm corneal irregularity indices were significantly less in the DALK group than in the PKP group at 1-year follow-up ( p = 0.021, Mann-Whitney test), however, there was only marginal significance at final follow-up ( p = 0.084, Mann-Whitney test) ( Table 3 and Fig. 1 ).