Table 1. Preoperative demographic data of patients in SMILE and FS-LASIK groups.

Groups	Eyes	Gender (M/F)	Age (y)	SE (D)	Sphere (D)	Cylinder (D)	CCT (µm)	CDVA (logMAR)
SMILE	78	13/27	26.9±9.00 (18 to 40)	-8.11±1.09 (-6.0 to -12.0)	-7.61±1.02 (-6.0 to -10.0)	-0.92±0.91 (-0.5 to -3.5)	552.15±30.80 (500 to 650)	-0.07±0.18 (0.2 to -0.2)
FS-LASIK	65	10/23	27.1±9.40 (18 to 40)	-8.05±1.12 (-6.0 to -12.0)	-7.58±1.05 (-6.0 to -10.0)	-0.95±0.85 (-0.5 to -3.5)	548.61±29.19 (500 to 650)	-0.06±0.19 (0.2 to -0.2)
t			-0.532	-0.361	-0.136	0.155	0.169	-1.298
P			0.596	0.719	0.892	0.877	0.866	0.196

Data were given as mean±standard deviation with range in parenthesis. SMILE: Small-incision lenticule extraction; FS-LASIK: Femtosecond laser-assisted laser in situ keratomileusis; D: Diopters; SE: Spherical equivalent; CCT: Central corneal thickness; CDVA: Corrected distance visual acuity; logMAR: Logarithm of the minimum angle of resolution.