Table 2.

Mean values ± SD of the manifest spherical equivalent (shown in diopters) preoperatively, and at one and 12 months after FemtoLASIK surgery, for the 60 myopic eyes of our study. P-values represent the statistical significance of the difference between two consecutive visits.

Manifest Spherical Equivalent	Diopters (mean±SD)	P-value a
Preoperative	–3.827 ± 1.410
Postoperative 1 day	+0.079 ± 0.486	<0.0005b
Postoperative 1 month	-0.008 ± 0.394	0.247b
Postoperative 12 months	–0.064 ± 0.186	0.236c
a Statistical significance of the difference when compared to the previous visit
b Wilcoxon Signed Rank Test
c Paired Samples T-Test