Table 1 Distribution and types of preoperative astigmatism (N, %)
Anterior corneal (n = 60) | Posterior corneal (n = 60) | Total corneal (n = 60) | ||||
|---|---|---|---|---|---|---|
Distribution | < 1.5 D | 29 (48.3%) | < 0.5 D | 49 (81.7%) | < 1.5 D | 21 (35.0%) |
1.5 ~ 2.5 D | 26 (43.3%) | 0.5 D ~ 1.0 D | 11 (18.3%) | 1.5 ~ 2.5 D | 34 (56.7%) | |
≥2.5 D | 5 (8.3%) | ≥1.0 D | 0 (0.0%) | ≥2.5 D | 5 (8.3%) | |
Type | WTR | 34 (56.7%) | WTR | 34 (56.7%) | WTR | 34 (56.7%) |
ATR | 24 (40.0%) | ATR | 10 (16.7%) | ATR | 23 (38.3) | |
oblique | 2 (3.3%) | oblique | 9 (15.0%) | oblique | 3 (5.0%) | |
No astigmatism | 7 (11.7%) | |||||