Clinical Study
Polar Value Analysis of Corneal Astigmatism in Intrastromal Corneal Ring Segment Implantation
Table 3
Subgroup analysis.
| Thickness (m) | Number | Preoperative polar value (D) | Postoperative polar value (D) | Polar value change (D) | Preoperative keratometry (D) | Postoperative keratometry (D) | Keratometry change (D) | AKP(+0) | AKP(+45) | AKP(+0) | AKP(+45) | ΔAKP(+0) | ΔAKP(+45) |
| 350 | 3 | 5.77 ± 2.56 | 0 | 6.80 ± 2.42 | 0.49 ± 1.00 | 1.03 ± 0.70 | 0.49 ± 1.00 | 49.02 ± 0.88 | 46.93 ± 0.81 | −2.08 ± 1.53 | 400 | 8 | 7.33 ± 4.40 | 0 | 5.49 ± 4.88 | −1.19 ± 1.56 | −1.83 ± 1.69 | −1.19 ± 1.56 | 49.93 ± 3.10 | 47.74 ± 1.86 | −2.18 ± 2.00 | 450 | 23 | 7.47 ± 3.40 | 0 | 5.81 ± 4.39 | −0.39 ± 2.86 | −1.66 ± 3.15 | −0.39 ± 2.86 | 55.87 ± 4.65 | 51.27 ± 5.34 | −4.60 ± 1.74 |
|
|