Preoperative ophthalmological examination
| Refraction spherical RE | Refraction spherical LE | Astigmatism ≥1 D RE | Astigmatism ≥1 D LE | Anisometropia spherical ≥1 D | Anisometropia astigmatism ≥1 D | |
| Total | +2.75 D (0 to +7.00) | +3.00 D (0 to +6.50) | 43/107 (40.0%) | 47/108 (43.5%) | 5/107 (4.7%) | 8/107 (7.5%) |
| Sagittal | +3.00 D (+1.00 to +7.00) | +3.00 D (+1.00 to +6.50) | 29/73 (39.7%) | 34/74 (45.9%) | 1/73 (1.4%) | 2/73 (2.7%) |
| Metopic | +3.00 D (+1.00 to +5.00) | +3.00 D (0 to +5.00) | 9/20 (45.0 %) | 7/20 (35.0%) | 1/20 (5.0%) | 1/20 (5.0%) |
| Unicoronal | +2.38 D (0 to +4.00) | +2.62 D (0 to +4.50) | 5/14 (35.7%) | 6/14 (42.8%) | 3/14 (21.4%) | 5/14 (35.7%) |
Median values (range) of spherical component and prevalence rates of astigmatism ≥1 D and anisometropia of spherical component and astigmatism ≥1 D in 107 REs and 108 LEs.
D, dioptre; LE, left eye; RE, right eye.