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Table 2 Mean corneal power, mean magnitude of astigmatism and mean value of J0 & J45 in 3 subgroups classified according to preoperative steep axis (WTR: 32 eyes; oblique: 13 eyes; ATR: 24 eyes)

From: Comparison of surgically induced astigmatism between anterior and total cornea in 2.2 mm steep meridian incision cataract surgery

Keratometric measurement

Preoperative (Mean diopter ± SD)

Postoperative (Mean diopter ± SD)

* p value

corneal power

astigmatism

corneal power

astigmatism

corneal power

astigmatism

magnitude

J0

J45

magnitude

J0

J45

magnitude

J0

J45

WTR

Automated K

43.65 ± 1.59

1.01 ± 0.92

−0.46 ± 0.46

0.05 ± 0.21

43.65 ± 1.58

0.85 ± 0.74

−0.32 ± 0.40

0.03 ± 0.22

0.76

0.009

<  0.001

0.75

Scheimpflug Anterior K

43.64 ± 1.59

1.10 ± 0.91

−0.48 ± 0.48

0.07 ± 0.22

43.60 ± 1.54

0.81 ± 0.72

−0.30 ± 0.40

0.04 ± 0.22

0.76

<  0.001

<  0.001

0.39

Scheimpflug Posterior K

−6.39 ± 0.20

0.38 ± 0.17

0.18 ± 0.09

−0.03 ± 0.05

− 6.39 ± 0.18

0.38 ± 0.16

0.18 ± 0.08

−0.03 ± 0.06

0.62

0.97

0.72

0.78

Scheimpflug EKR 3.0-mm

43.48 ± 1.58

0.85 ± 0.90

−0.29 ± 0.50

− 0.01 ± 0.23

43.45 ± 1.50

0.71 ± 0.63

−0.12 ± 0.40

−0.03 ± 0.23

0.91

0.28

0.002

0.61

Scheimpflug EKR 4.5-mm

43.61 ± 1.51

0.90 ± 0.74

−0.33 ± 0.43

0.00 ± 0.22

43.63 ± 1.57

0.68 ± 0.63

−0.17 ± 0.37

0.00 ± 0.22

0.59

0.004

<  0.001

0.94

Scheimpflug TCRP 2.0-mm ring

42.94 ± 1.80

0.97 ± 1.04

−0.36 ± 0.55

0.02 ± 0.27

42.86 ± 1.69

0.75 ± 0.67

−0.15 ± 0.42

0.00 ± 0.24

0.79

0.13

<  0.001

0.90

Scheimpflug TCRP 3.0-mm zone

42.96 ± 1.79

0.91 ± 0.92

−0.33 ± 0.50

0.02 ± 0.25

42.88 ± 1.69

0.72 ± 0.67

−0.15 ± 0.41

0.00 ± 0.23

0.85

0.12

<  0.001

0.72

Scheimpflug TCRP 4.0-mm zone

43.03 ± 1.77

0.92 ± 0.82

−0.34 ± 0.46

0.02 ± 0.23

42.97 ± 1.72

0.66 ± 0.68

−0.17 ± 0.39

0.01 ± 0.21

0.97

<  0.001

<  0.001

0.60

oblique

Automated K

43.81 ± 1.32

0.54 ± 0.27

−0.04 ± 0.08

0.01 ± 0.30

43.79 ± 1.35

0.52 ± 0.24

−0.03 ± 0.16

0.00 ± 0.24

0.74

0.66

0.86

0.70

Scheimpflug Anterior K

43.81 ± 1.29

0.70 ± 0.27

−0.11 ± 0.18

0.06 ± 0.32

43.83

±1.32

0.59 ± 0.22

−0.02 ± 0.21

0.05 ± 0.24

0.97

0.037

0.06

0.60

Scheimpflug Posterior K

−6.46 ± 0.28

0.29 ± 0.15

0.13 ± 0.07

−0.01 ± 0.08

−6.49 ± 0.33

0.31 ± 0.17

0.12 ± 0.10

−0.04 ± 0.07

0.44

0.53

0.86

0.06

Scheimpflug EKR 3.0-mm

43.47 ± 1.33

0.65 ± 0.29

0.02 ± 0.16

0.07 ± 0.32

43.49 ± 1.16

0.65 ± 0.37

0.09 ± 0.26

0.04 ± 0.26

0.94

0.81

0.35

0.55

Scheimpflug EKR 4.5-mm

43.78 ± 1.32

0.65 ± 0.26

0.00 ± 0.20

0.08 ± 0.29

43.82 ± 1.24

0.58 ± 0.28

0.07 ± 0.20

0.02 ± 0.26

0.99

0.38

0.28

0.42

Scheimpflug TCRP 2.0-mm ring

42.83 ± 1.47

0.82 ± 0.30

0.05 ± 0.19

0.08 ± 0.40

42.96 ± 1.61

0.82 ± 0.34

0.16 ± 0.32

0.01 ± 0.28

0.18

0.91

0.15

0.20

Scheimpflug TCRP 3.0-mm zone

42.86 ± 1.45

0.79 ± 0.28

0.02 ± 0.19

0.09 ± 0.38

42.99 ± 1.61

0.78 ± 0.29

0.14 ± 0.29

0.04 ± 0.28

0.24

0.96

0.10

0.38

Scheimpflug TCRP 4.0-mm zone

43.05 ± 1.37

0.72 ± 0.19

0.01 ± 0.19

0.06 ± 0.33

43.14 ± 1.52

0.62 ± 0.21

0.11 ± 0.22

0.02 ± 0.23

0.20

0.17

0.06

0.38

ATR

Automated K

43.64 ± 1.54

0.70 ± 0.63

0.32 ± 0.31

0.05 ± 0.15

43.65 ± 1.54

0.64 ± 0.52

0.24 ± 0.31

0.04 ± 0.13

0.97

0.35

0.10

0.88

Scheimpflug Anterior K

43.59 ± 1.53

0.71 ± 0.62

0.28 ± 0.35

−0.03 ± 0.15

43.59 ± 1.59

0.61 ± 0.55

0.21 ± 0.33

0.02 ± 0.13

0.78

0.021

0.024

0.17

Scheimpflug Posterior K

−6.35 ± 0.25

0.19 ± 0.14

0.08 ± 0.08

−0.02 ± 0.04

−6.35 ± 0.23

0.22 ± 0.18

0.10 ± 0.09

−0.02 ± 0.05

0.87

0.19

0.11

0.93

Scheimpflug EKR 3.0-mm

43.45 ± 1.50

0.85 ± 0.54

0.34 ± 0.32

−0.03 ± 0.18

43.44 ± 1.59

0.79 ± 0.51

0.32 ± 0.31

−0.02 ± 0.16

0.81

0.35

0.63

0.99

Scheimpflug EKR 4.5-mm

43.71 ± 1.51

0.79 ± 0.51

0.34 ± 0.29

−0.02 ± 0.15

43.77 ± 1.56

0.76 ± 0.56

0.29 ± 0.35

−0.02 ± 0.14

0.31

0.50

0.14

0.95

Scheimpflug TCRP 2.0-mm ring

42.88 ± 1.51

0.97 ± 0.60

0.39 ± 0.36

−0.05 ± 0.22

42.92 ± 1.65

0.94 ± 0.63

0.39 ± 0.38

−0.02 ± 0.17

0.66

0.33

0.75

0.49

Scheimpflug TCRP 3.0-mm zone

42.92 ± 1.53

0.95 ± 0.57

0.39 ± 0.35

−0.06 ± 0.18

42.95 ± 1.66

0.91 ± 0.61

0.39 ± 0.36

−0.02 ± 0.15

0.72

0.44

0.67

0.57

Scheimpflug TCRP 4.0-mm zone

43.00 ± 1.54

0.86 ± 0.52

0.38 ± 0.31

−0.05 ± 0.14

43.08 ± 1.61

0.82 ± 0.60

0.35 ± 0.34

−0.01 ± 0.13

0.32

0.44

0.39

0.36

  1. SD standard deviation
  2. * p-value by paired t-test