Baseline clinical characteristics
| Clinical characteristics | Means±SD (min–max) or n% |
| Female, n (%) | 30 (93.8) |
| Age (mean±SD), years | 20–57 (37.3±9. 5) |
| Clinical duration (mean±SD), months | 0.2–360 (30.0±66.2) |
| Preoperative symptoms | |
| Headache, n (%) | 10 (31.2) |
| Dizziness, n (%) | 4 (12.5) |
| Visual dysfunction, n (%) | 14 (43.8) |
| Pulsatile tinnitus, n (%) | 14 (43.8) |
| Temporary amaurosis, n (%) | 3 (9.4) |