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Table 2 Preoperative and Postoperative Corneal Astigmatism Data (D)

From: Effect of incision on visual outcomes after implantation of a trifocal diffractive IOL

Groups
mean ± SD median (range)
Preoperation 1 Day Postoperation 2 Weeks Postoperation 1 Month Postoperation 3 Months Postoperation P a
A1 0.37 ± 0.07
0.39 (0.23 to 0.49)
0.68 ± 0.32
0.82 (0.20 to 1.26)
0.64 ± 0.22
0.60 (0.26 to 1.05)
0.55 ± 0.17
0.55 (0.25 to 0.86)
0.42 ± 0.12
0.44 (0.22 to 0.61)
0.17
(power = 50.64%)
A2 0.73 ± 0.11
0.70 (0.58 to 0.99)
0.63 ± 0.26
0.66 (0.26 to 1.27)
0.48 ± 0.12
0.45 (0.29 to 0.86)
0.49 ± 0.09
0.54 (0.36 to 0.60)
0.44 ± 0.09
0.45 (0.25 to 0.56)
0.00
(power = 100%)
B1 0.40 ± 0.07
0.41 (0.27 to 0.49)
0.80 ± 0.46
0.88 (0.20 to 1.87)
0.66 ± 0.23
0.62 (0.26 to 1.00)
0.60 ± 0.22
0.57 (0.25 to 1.00)
0.47 ± 0.18
0.53 (0.12 to 0.88)
0.15
(power = 52.65%)
B2 0.73 ± 0.12
0.68 (0.58 to 0.99)
1.01 ± 0.38
0.91 (0.66 to 2.16)
0.79 ± 0.30
0.69 (0.48 to 1.54)
0.79 ± 0.28
0.83 (0.45 to 1.83)
0.69 ± 0.21
0.70 (0.43 to 1.35)
0.22
(power = 31.10%)
A1/B1 (P) 0.21
(power = 40.89%)
0.32
(power = 25.94%)
0.73
(power = 8.83%)
0.42
(power = 21.03%)
0.29
(power = 28.57%)
A2/B2 (P) 0.98
(power = 5.00%)
0.00
(power = 99.61%)
0.00
(power = 99.96%)
0.00
(power = 99.99%)
0.00
(power = 100%)
  1. aComparison between preoperation and 3 months postoperation