Table 3 Subgroup analysis of postoperative changes in refractive astigmatism.

Number of eyes

15

20

16

15

Cylindrical refractive error (D)

Preop

0.88 ± 0.59

1.25 ± 1.15

0.314

2.22 ± 1.23

1.88 ± 1.16

0.446

Postop

0.52 ± 0.24

0.63 ± 0.65

0.633

0.41 ± 0.38

1.03 ± 0.80

0.014*

Vector analysis

TIA (D)

1.05 ± 0.25

1.09 ± 0.21

0.601

2.30 ± 0.60

2.01 ± 0.64

0.202

SIA (D)

0.83 ± 0.47

0.93 ± 0.89

0.587

2.04 ± 1.22

1.09 ± 0.60

0.008*

DV (D)

0.93 ± 0.51

1.43 ± 1.02

0.131

1.23 ± 0.82

1.57 ± 0.52

0.177

CI

0.80 ± 0.41

0.85 ± 0.74

0.419

0.87 ± 0.39

0.52 ± 0.25

0.006*

Number of eyes

20

25

9

10

Cylindrical refractive error (D)

Preop

1.44 ± 1.31

1.41 ± 1.28

0.926

1.94 ± 0.96

1.80 ± 0.90

0.842

Postop

0.45 ± 0.32

0.72 ± 0.79

0.726

0.53 ± 0.32

1.00 ± 0.55

0.035*

Vector analysis

TIA (D)

1.77 ± 0.91

1.48 ± 0.69

0.424

1.58 ± 0.46

1.62 ± 0.62

0.905

SIA (D)

1.50 ± 1.25

1.05 ± 0.87

0.112

1.48 ± 0.77

0.88 ± 0.45

0.043*

DV (D)

1.18 ± 0.70

1.63 ± 0.90

0.071

0.71 ± 0.44

1.13 ± 0.55

0.079

CI

0.83 ± 0.39

0.76 ± 0.69

0.061

0.94 ± 0.37

0.58 ± 0.23

0.017*

Number of eyes

16

15

15

20

Cylindrical refractive error (D)

Preop

1.14 ± 0.70

1.05 ± 0.56

0.695

2.03 ± 1.45

1.88 ± 1.40

0.746

Postop

0.44 ± 0.34

0.60 ± 0.53

0.470

0.48 ± 0.31

0.95 ± 0.83

0.030*

Vector analysis

TIA (D)

1.41 ± 0.56

1.21 ± 0.36

0.258

2.01 ± 0.88

1.75 ± 0.75

0.364

SIA (D)

1.00 ± 0.56

0.83 ± 0.57

0.399

1.94 ± 1.34

1.13 ± 0.89

0.025*

DV (D)

1.13 ± 0.71

1.36 ± 0.81

0.417

1.03 ± 0.69

1.60 ± 0.87

0.047*

CI

0.71 ± 0.32

0.75 ± 0.61

0.446

0.97 ± 0.43

0.67 ± 0.60

0.008*