Corneal astigmatism cylinder for the 110 468 eyes, according to astigmatism type
| Astigmatism types | N (%) | Mean | SD | Median | IQR |
| All astigmatism | 1 10 468 | 1.06 | 0.81 | 0.85 | 0.52–1.35 |
| With-the-rule (WTR) | 33 878 (30.1%) | 1.08 | 0.83 | 0.87 | 0.54–1.35 |
| Against-the-rule (ATR) | 46 999 (42.5%) | 1.14 | 0.82 | 0.96 | 0.58–1.49 |
| Oblique | 18 826 (17.0%) | 0.8 | 0.64 | 0.64 | 0.41–0.99 |
| Unknown/missing | 10 765 (9.7%) | 1.07 | 0.84 | 0.86 | 0.51–1.37 |