Table 2 Pre-operative and post-operative corneal power measured with AL scan at 2 diameter zones.

From: Prediction of residual astigmatism in cataract surgery at different diameter zones using optical biometry measurement

Parameter

Pre-OP

Post-OP

2.4-mm

3.3-mm

p value

2.4-mm

3.3-mm

p value

Average K (D)

43.92 ± 0.35

43.88 ± 0.35

 0.002

44.05 ± 0.4

43.97 ± 0.37

 < 0.001

Flattest K (D)

43.57 ± 1.5

43.54 ± 1.49

 0.075

43.65 ± 1.49

43.6 ± 1.49

 0.07

Steepest K (D)

44.27 ± 1.6

44.23 ± 1.6

 0.023

44.45 ± 1.61

44.35 ± 1.57

 0.01

Mean absolute CA (D)

0.70 ± 0.43

0.69 ± 0.44

 0.3071

0.80 ± 0.51

0.75 ± 0.47

 0.258

N of patients

 ≤ 0.50 D

42

43

 

33

37

 

 ≤ 1.00 D

76

79

 

74

75

 

 ≤ 1.50 D

93

95

 

90

92

 

 ≤ 2.00 D

101

100

 

99

99

 
  1. CA corneal astigmatism, D diopters, K keratometry, No. number, Pre-OP pre-operative, Post-OP post-operative.
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