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Table 2 Vector analysis outcome using Alpins method

From: Evaluation of the effectiveness of combined femtosecond laser-assisted cataract surgery and femtosecond laser astigmatic keratotomy in improving post-operative visual outcomes

 

Mean

Range a

TIA(D)

1.40 ± 0.37

1.25, 1.55

SIA(D)

1.22 ± 0.46

1.02, 1.41

DV(D)

0.70 ± 0.29

0.58, 0.82

ME(D)

−0.18 ± 0.36

−0.33, 0.04

AE(°)

0.85 ± 13.69

−4.80, 6.51

CI

0.88 ± 0.29

0.76, 0.99

FI

0.78 ± 0.25

0.67, 0.88

IOS

0.51 ± 0.19

0.43, 0.59

  1. TIA target-induced astigmatism, SIA surgically induced astigmatism, DV difference vector, ME magnitude of error, AE angle of error, CI correction index, FI flattening index, IOS index of success
  2. a95% confidence interval