Skip to main content

Table 5 Vectors and indices examined by the Alpins method: Data

From: Laser in situ keratomileusis for astigmatism ≤ 0.75 Diopter combined with low myopia: a retrospective data analysis

Cylinder

0.25 D

0.50 D

0.75 D

Total

P

Component

Min-Max

Median

Min-Max

Median

Min-Max

Median

Min-Max

Median

 
  

(Q25/Q75)

 

(Q25-Q75)

 

(Q25-Q75)

 

(Q25-Q75)

TIA Magnitude

0.25 /0.25

0.25(0.25/0.25)

0.50 / 0.50

0.50(0.50/0.50)

0.75 / 0.75

0.75(0.75/0.75)

0.25 / 0.75

0.50(0.38/0.50)

0.000

Angle

3 / 180

87(53/142.5)

3 / 180

80(50/132.75)

3 / 177

94(29/121.5)

3 / 180

86(50/131.5)

0.872

SIA Magnitude

0.05 /3.20

0.64(0.33/0.83)

0.02 / 2.14

0.91(0.61/1.24)

0.21 / 1.92

0.99(0.61/1.25)

0.02 / 3.20

0.82(0.54/1.23)

0.001

Angle

19 / 172

82(62.2/109.09)

4 / 177

82(57.66/113.36)

5 / 173

96(68.44/122.09)

4 / 177

86(61.3/113.84)

0.350

DV Magnitude

0.00 /3.00

0.50(0.31/0.94)

0.00 / 1.75

0.50(0.25/1.00)

0.00 / 1.50

0.50(0.50/1.00)

0.00 / 3.00

0.50(0.50/1.00)

0.839

Angle

0 / 180

138.5(21.25/166.75)

0 / 180

122.5(21.25/164)

0 / 180

63(22.5/163.5)

0 / 180

125(21.5/164.5)

0.722

Correction index

0.21 /12.78

2.57(1.3/3.31)

0.03 / 4.28

1.82(1.23/2.49)

0.28 / 2.56

1.32(0.82/1.67)

0.03 /12.78

1.77(1.11/2.51)

0.000

Magnitude of error

-0.2 / 2.95

0.39(0.08/0.58)

-0.48 / 1.64

0.41(0.11/0.74)

-0.54 / 1.17

0.24(-0.14/0.5)

-0.54 / 2.95

0.37(0.04/0.66)

0.079

Angle of error

-119.26 /146

-2.08(-44.7/30.49)

-175.8 /142.45

0.5(-11.47/13.82)

-69.32 /159.39

0(-11.92/12.96)

-175.8 /159.39

0(-15.53/14.66)

0.565

Index of success

0 / 12

2(1.25/3.75)

0 / 3.5

1(0.5/2)

0 / 2

0.67(0.67/1.33)

0 / 12

1(0.67/2)

0.000

Flattening Index

0.02 /12.57

1.41(0.7/2.72)

0.03 / 4.24

1.11(0.52/1.78)

0.02 / 2.49

0.87(0.48/1.15)

0.02 /12.57

1(0.55/1.82)

0.023

  1. * Tested with non-parametric Kruskal-Wallis Test.