Table 2. Postoperative visual and refractive outcomes in the femtosecond lenticule extraction (FLEx) group and the small-incision lenticule extraction (SMILE) group.

	FLEx group	SMILE group	p value	z value
LogMAR UDVA	-0.12 ± 0.11 (range, -0.30 to 0.05)	-0.09 ± 0.12 (range, -0.30 to 0.30)	0.48	0.71
LogMAR CDVA	-0.18 ± 0.07 (range, -0.30 to -0.08)	-0.16 ± 0.08 (range, -0.30 to 0.00)	0.52	0.64
Manifest spherical equivalent (D)	-0.03 ± 0.22 (range, -0.62 to 0.50)	-0.05 ± 0.34 (range, -1.00 to 1.00)	0.60	0.53
Manifest cylinder (D)	-0.38 ± 0.47 (range, -1.25 to 0.00)	-0.33 ± 0.45 (range, -1.75 to 0.00)	0.74	0.45
Corneal astigmatism (D)	1.00 ± 0.54 (range, 0.25 to 2.25)	1.31 ± 0.58 (range, 0.25 to 2.25)	0.50	1.95

D = diopters; FLEx = femtosecond lenticule extraction; SMILE = small-incision lenticule extraction; logMAR = logarithm of the minimal angle of resolution; UDVA = uncorrected distance visual acuity; CDVA = corrected distance visual acuity.