Table 1 Baseline characteristics of the first surgical eyes and the fellow eyes

Number of eyes

202

202

-

Age,y

26.41 ± 5.47

26.41 ± 5.47

-

Sex, % women

63.4

63.4

-

Intraocular Pressure, mmHg

15.96 ± 1.75

15.80 ± 1.74

0.087

Keratometric power of flat meridian (K1)

42.89 ± 1.30

42.85 ± 1.33

0.079

Keratometric power of steep meridian (K2)

44.10 ± 1.36

44.10 ± 1.35

0.852

Mean curvature power (Mean K)

43.50 ± 1.30

43.48 ± 1.30

0.270

Cornea Central Thickness (CCT), um

542.17 ± 29.11

541.58 ± 28.86

0.370

Pupil Diameter, mm

5.87 ± 0.76

5.83 ± 0.79

0.192

Optical zone, mm

6.47 ± 0.10

6.47 ± 0.13

0.703

Lenticule thickness, μm

118.23 ± 25.55

118.34 ± 26.26

0.898

Preop pupillary offset, mm

0.16 ± 0.09

0.16 ± 0.09

0.361

 X axis

0.01 ± 0.12

-0.01 ± 0.12

0.249

 Y axis

0.05 ± 0.13

0.06 ± 0.12

0.159

Preop

 Spherical (D)

-5.24 ± 2.15

-5.14 ± 2.13

0.506

 Cylindrical (D)

-0.82 ± 0.60

-0.88 ± 0.80

0.231

 Manifest Refraction Spherical Equivalent (MRSE)

-5.64 ± 2.23

-5.52 ± 2.34

0.445

 Uncorrected Visual Acuity (UDVA)

1.41 ± 0.34

1.41 ± 0.33

0.884

 Corrected Distance Visual Acuity (CDVA)

0.00 ± 0.01

0.00 ± 0.02

0.219

Postop

 Spherical (D)

0.07 ± 0.55

0.00 ± 0.56

0.087

 Cylindrical (D)

-0.43 ± 0.32

-0.39 ± 0.34

0.129

 Manifest Refraction Spherical Equivalent (MRSE)

-0.17 ± 0.57

-0.20 ± 0.60

0.344

 Uncorrected Visual Acuity (UDVA)

0.00 ± 0.02

0.00 ± 0.02

0.340

 Corrected Distance Visual Acuity (CDVA)

0.00 ± 0.02

0.00 ± 0.01

0.391

Safety index

1.01 ± 0.05

1.01 ± 0.08

0.104

Efficacy index

1.00 ± 0.06

1.01 ± 0.08

0.090