Table 3 Comparison of vector parameters between the TransPRK and off-flap Epi-LASIK groups

 Magnitude (D)

0.91 ± 0.62

0.00, 2.67

0.90 ± 0.65

0.00, 3.06

.936

 Axis (degrees)

102.0 ± 75.6

1.0, 180.0

109.2 ± 72.8

1.0, 180.0

.698

 Magnitude (D)

1.12 ± 0.65

0.25, 2.75

1.21 ± 0.71

0.21, 3.06

.464

 Axis (degrees)

92.7 ± 75.5

1.1, 180.0

97.8 ± 74.7

1.0, 179.2

.796

 Magnitude (D)

0.43 ± 0.30

0.00, 1.00

0.48 ± 0.39

0.00, 1.49

.473

 Axis (degrees)

81.4 ± 52.2

0.00, 170.0

82.2 ± 55.6

0.00, 175.0

.953

Angle of Error (degrees)

−1.5 ± 13.9

−38.9, 35.9

2.2 ± 13.2

−49.0, 72.1

.394

Correction index

1.32 ± 0.61

0.44, 3.19

1.45 ± 0.76

0.50, 3.90

.419

Index of success

0.53 ± 0.54

0.00, 1.99

0.65 ± 0.72

0.00, 3.05

.410