Table 3: Summary of vector analysis post toric intraocular lens implantation.

Component

Min

Max

Median

(Q25-Q75)

95% CI

TIA: mag (D)

0.22

5.13

1.8

(1.03, 2.82)

1.53, 2.07

TIA: angle ()

1

179

95

(74, 152)

83, 107

SIA: mag (D)

0.04

4.8

2.19

(1.13, 2.99)

1.94, 2.44

SIA: angle ()

1

179

103

(83, 146)

92, 114

DV: mag (D)

0.04

2.55

0.93

(0.59, 1.42)

0.80, 1.06

DV: angle ()

5

179

107

(81, 133)

98, 116

CI

0.04

4.77

1.17

(0.90, 1.51)

1.00, 1.33

ME

-1.42

1.67

0.18

(-0.33, 0.62)

0.02, 0.34

AE ()

-178

172

4

(-5, 15)

-11, 19

IOS

0.02

3.8

0.53

(0.31, 0.96)

0.37, 0.69

DVNT: mag (D)

0.91

4.64

2.38

(1.94, 2.91)

2.20, 2.56

DVNT: angle ()

1

179

110

(96, 146)

99, 121

 

TIA: target induced astigmatic vector, mag: magnitude, SIA: surgically induced astigmatic vector, DV: difference vector, CI: correction index (ideal value 1), ME: magnitude of error (ideal value 0), AE: angle of error (ideal value 0), IOS: index of success (ideal value 0), DVNT: difference vector, no toric - the vector that describes the difference between the actual post-operative result and that predicted by the Alcon calculation (i.e., the astigmatism which would have to be induced to undo the toric IOL component), DVR: the difference vector ratio (the ratio of DVNT magnitude to DV magnitude)