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Patients by Referral Category and Rates of Abnormality
| Referral Category | Total No. (%) | No. (%) Abnormal |
| Isolated sporadic aniridia | 43 (56) | 16 (37) |
| WAGR | 12 (15) | 8 (66.6) |
| Aniridia plus other abnormalities (not WAGR) | 8 (10.5) | 2 (25) |
| Familial aniridia | 14 (18.5) |
4 (28.6) |
| Total | 77 | 30 (39) |
