. 2023 Jun 26;23:291. doi: 10.1186/s12886-023-03045-6

Table 1.

Baseline Parameters

Parameter	Total (131)	SMILE(35)	FS-LASIK (73)	ICL(23)	P
Sex (female)	90 (68.7%)	20(57.1%)	53(72.6%)	17(73.9%)	0.225
Age (years)	26.46 ± 4.64 (18, 39)	25.80 ± 4.98 (18,37)	27.11 ± 4.85 (19, 39)	25.39 ± 2.95 (19, 31)	0.187
Pupil size (mm)	6.21 ± 0.82 (3.75, 7.75)	6.14 ± 0.76 (4.00, 7.25)	6.29 ± 0.86 (3.75, 7.75)	6.05 ± 0.74 (4.50, 7.25)	0.415
Sphere(D)	-4.95 ± 2.04 (-13.50, -1.50)	-3.82 ± 1.20 (-6.25, -1.50)	-4.67 ± 1.44 (-8.00, -1.50)	-7.54 ± 2.49 (-13.50, -2.75)	0.000
Cylinder(D)	-0.64 ± 0.55 (-3.50, 0)	-0.54 ± 0.37 (-1.50, 0)	-0. 64 ± 0.54 (-3.50, 0)	-0.78 ± 0.78 (-2.75, 0)	0.241
Pre-op CDVA	1.02 ± 0.08 (0.9, 1.2)	1.03 ± 0.09 (0.9, 1.2)	1.03 ± 0.08 (0.9, 1.2)	1.00 ± 0.06 (0.9, 1.2)	0.139
IOP (mmHg)	17.28 ± 2.08 (12, 21)	17.46 ± 2.11 (14, 21)	17.33 ± 1.95 (13, 21)	16.87 ± 2.46 (12, 21)	0.555
CCT (µm)	535.41 ± 29.14 (439, 606)	547.71 ± 22.90 (509, 605)	535.62 ± 24.00 (495, 598)	516.04 ± 41.10 (439, 606)	0.000
Km (D)	43.43 ± 1.31 (40.3, 47.0)	43.17 ± 1.20 (40.3, 45.9)	43.37 ± 1.36 (41.0, 47.0)	44.05 ± 1.16 (42.2, 46.2)	0.032
ACA (D)	1.14 ± 0.54 (0.1, 3.3)	1.07 ± 0.36 (0.3, 1.9)	1.09 ± 0.59 (0.1, 3.3)	1.41 ± 0.51 (0.7, 2.7)	0.026
Chord µ (mm)	0.18 ± 0.11 (0.01, 0.51)	0.17 ± 0.10 (0.02, 0.43)	0.17 ± 0.11 (0.01, 0.49)	0.23 ± 0.11 (0.08. 0.51)	0.092

Parameter

Total (131)

SMILE(35)

FS-LASIK (73)

ICL(23)

Sex (female)

90 (68.7%)

20(57.1%)

53(72.6%)

17(73.9%)

0.225

Age (years)

26.46 ± 4.64

(18, 39)

25.80 ± 4.98

(18,37)

27.11 ± 4.85

(19, 39)

25.39 ± 2.95

(19, 31)

0.187

Pupil size (mm)

6.21 ± 0.82

(3.75, 7.75)

6.14 ± 0.76

(4.00, 7.25)

6.29 ± 0.86

(3.75, 7.75)

6.05 ± 0.74

(4.50, 7.25)

0.415

Sphere(D)

-4.95 ± 2.04

(-13.50, -1.50)

-3.82 ± 1.20

(-6.25, -1.50)

-4.67 ± 1.44

(-8.00, -1.50)

-7.54 ± 2.49

(-13.50, -2.75)

0.000

Cylinder(D)

-0.64 ± 0.55

(-3.50, 0)

-0.54 ± 0.37

(-1.50, 0)

-0. 64 ± 0.54

(-3.50, 0)

-0.78 ± 0.78

(-2.75, 0)

0.241

Pre-op CDVA

1.02 ± 0.08

(0.9, 1.2)

1.03 ± 0.09

(0.9, 1.2)

1.03 ± 0.08

(0.9, 1.2)

1.00 ± 0.06

(0.9, 1.2)

0.139

IOP (mmHg)

17.28 ± 2.08

(12, 21)

17.46 ± 2.11

(14, 21)

17.33 ± 1.95

(13, 21)

16.87 ± 2.46

(12, 21)

0.555

CCT (µm)

535.41 ± 29.14

(439, 606)

547.71 ± 22.90

(509, 605)

535.62 ± 24.00

(495, 598)

516.04 ± 41.10

(439, 606)

0.000

Km (D)

43.43 ± 1.31

(40.3, 47.0)

43.17 ± 1.20

(40.3, 45.9)

43.37 ± 1.36

(41.0, 47.0)

44.05 ± 1.16

(42.2, 46.2)

0.032

ACA (D)

1.14 ± 0.54

(0.1, 3.3)

1.07 ± 0.36

(0.3, 1.9)

1.09 ± 0.59

(0.1, 3.3)

1.41 ± 0.51

(0.7, 2.7)

0.026

Chord µ (mm)

0.18 ± 0.11

(0.01, 0.51)

0.17 ± 0.10

(0.02, 0.43)

0.17 ± 0.11

(0.01, 0.49)

0.23 ± 0.11

(0.08. 0.51)

0.092

The data are presented as means ± standard deviation (SD) and range. Bold data are significant at P < 0.05 (One-way ANOVA and Pearson Chi-Square). D = diopters, Pre-op = preoperative, IOP = intraocular pressure, UDVA = uncorrected distance visual acuity, CDVA = corrected distance visual acuity, Km = mean keratometry, ACA = anterior corneal astigmatism, Chord µ = the two-dimensional distance between the center of the pupil and the subject-fixated coaxially sighted corneal light reflex