Table 3.

Fourier parameters of the preoperative and postoperative anterior corneal surfaces in both groups.

	SMILE			TransPRK			Induced change (postop–prop) between the groups
	Preop	Postop	P-value	Preop	Postop	P-value	P-value
SphRmin	7.80 ± 0.26	8.06 ± 0.28	<.001	7.79 ± 0.28	8.06 ± 0.30	<.001	.97
SphEcc	0.49 ± 0.14	-0.79 ± 0.14	<.001	0.52 ± 0.10	-0.87 ± 0.18	<.001	<.001
MaxDec	0.15 ± 0.06	0.29 ± 0.11	<.001	0.13 ± 0.05	0.32 ± 0.12	<.001	.04
AstC	0.11 ± 0.05	0.09 ± 0.04	.019	0.10 ± 0.05	0.10 ± 0.05	.9	.05
AstP	0.12 ± 0.05	0.15 ± 0.08	<.001	0.10 ± 0.04	0.14 ± 0.07	<.001	.39
Irr	0.022 ± 0.025	0.026 ± 0.009	.25	0.022 ± 0.006	0.036 ± 0.016	<.001	.004

Means ± SD for continuous variables.

AstC = regular astigmatism at the center, AstP = regular astigmatism at the periphery, Irr = irregularity, MaxDec = maximum decentration, postop = postoperatively, preop = preoperatively, SMILE = small-incision lenticule extraction, SphEcc = mean eccentricity of the spherical component, SphRmin = steepest radius of the curvature of spherical components, TransPRK = transepithelial photorefractive keratectomy.