Table 2.
Ocular Residual Astigmatism Centroids by Measurement Method
| Group | Keratometry (K) | Simulated Keratometry (SimK) | Total Keratometry (TK) | Total Corneal Power (TCP2) |
|---|---|---|---|---|
| Centroid ± SD (D) | ||||
| All eyes (n = 118) | 0.26 @ 173 ± 0.75* | 0.52 @ 177 ± 0.75* | 0.08 @ 151 ± 0.77† | 0.30 @ 174 ± 0.81† |
| ATR eyes (n = 50) | 0.17 @ 107 ± 0.73 | 0.24 @ 146 ± 0.78 | 0.31 @ 097 ± 0.69 | 0.16 @ 116 ± 0.76 |
| Oblique eyes (n = 23) | 0.14 @ 173 ± 0.53 | 0.43 @ 180 ± 0.66 | 0.21 @ 163 ± 0.49 | 0.30 @ 001 ± 0.72 |
| WTR eyes (n = 45) | 0.77 @ 179 ± 0.54 | 0.90 @ 001 ± 0.55 | 0.69 @ 179 ± 0.58 | 0.86 @ 179 ± 0.62 |
Notes: */†, difference is statistically significant.
Abbreviations: ATR, against-the-rule; WTR, with-the-rule.