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Table 1 Preoperative clinical information of the FS-LASIK and SMILE patients

From: Comparison of early changes in tear film protein profiles after small incision lenticule extraction (SMILE) and femtosecond LASIK (FS-LASIK) surgery

Clinical variable

FS-LASIK (n = 30)

SMILE (n = 26)

P-value

Age (years)

29.9 ± 9.9

30.8 ± 8.3

0.39

Sex (male/female)

17/13

14/12

0.89

SEQ (D)

-3.6 ± 2.1

-3.8 ± 1.4

0.33

Sphere (D)

-3.2 ± 2.3

-3.5 ± 1.5

0.39

Cyl (D)

-0.8 ± 0.8

-0.6 ± 0.6

0.57

K1 (D)

43.5 ± 1.2

43.9 ± 1.4

0.40

K2 (D)

44.4 ± 1.2

44.9 ± 1.4

0.15

IOP

15.4 ± 3.4

15.6 ± 4.0

0.75

CDVA

1.0 ± 0.1

1.0 ± 0.1

0.47

Preop pachymetry (µm)

533.0 ± 30.7

549.3 ± 28.6

0.07

  1. The values are shown as mean ± standard deviation for continuous variables and as counts for nominal variables. Statistical significance was evaluated using Wilcoxon rank sum test for continuous and Fisher’s exact test for nominal variables. D = diopter; SEQ = spherical equivalent refraction; Cyl = cylinder error, astigmatism; K1 and K2 = corneal keratometry; IOP = intraocular pressure; CDVA = corrected distance visual acuity