Table 15: Treatment Failure Assessed by Topographic Outcome Measures at 12-Months*.
| Author, Year | Patients | Regression Decrease K-Max | Stable K-Max | Progression Increase K-Max |
|---|---|---|---|---|
| Koller T, 2009 (55) | 105 | 39 (37%) > 1 D | 58 (55%) ± 1 D | 8 (8%) > 1 D |
| Agrawal V, 2009 (49) | 37 | 20 (54%) > 1 D | 14 (38%) ± 0.5 D | 3 (8%) > 1 D |
| Raiskup-Wolf F, 2008 (6) | 142 | 80 (56%) > 1 D | 43 (30%) ± 0.5 D | NR |
| Hersch P, 2011 (47) | 49 | 17 (35%)> 2 D | NR | 5 (10%) > 1 D |
| Wollensak G, 2003 (7) | 22 | 10 (45%) > 2 D 12 (55%) >1 D |
8 (36%) ±1.0 D | 0 |
| Range | 35% − 56% | 30% − 55% | 8% − 10% |
*
D indicates diopter; K-Max, maximum keratometry; P, patients