Table 2.
Astigmatic refractive outcomes
| Time Point | Absolute postoperative IOL rotation (degrees) | Residual refractive astigmatism (D) | Residual refractive astigmatism ≤ 0.5 D, % (n) | Residual refractive astigmatism ≤ 1.0 D,% (n) | Absolute residual astigmatism prediction error ≤ 0.5 D,% (n) | Total (N) |
|---|---|---|---|---|---|---|
| Predicted | 0.23 ± 0.034a | 35 | ||||
| POD#1 | 1.3 ± 0.28 | 0.19 ± 0.040 | 33 (94%) | 35 (100%) | 33 (94%) | 35 |
| POW#1 | 1.5 ± 0.26 | 0.20 ± 0.047 | 31 (89%) | 35 (100%) | 30 (86%) | 35 |
| POM#1 | 1.1 ± 0.22 | 0.21 ± 0.047 | 32 (94%) | 34 (100%) | 32 (94%) | 34 |
| P value | P = .58b | P = .91b | P = .58c | equal distribution | P = .34c |
a, t test for equal means between predicted and POM#1 residual astigmatism had P = 0.730; b, one-way ANOVA for equal means; c, chi-square test
POD#1, postoperative day 1; POW#1, postoperative week 1; POM#1, postoperative month 1