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Retinopathy by Hb genotype
| Patients with HbSS/HbSβ0/HbSβ+ (n = 83), n (%) | Patients with HbSC (n = 46), n (%) | P value | |
|---|---|---|---|
| Baseline | .000∗ | ||
| No SCR | 67 (80.7) | 26 (56.5) | |
| NPSCR | 12 (14.5) | 7 (15.2) | |
| PSCR | 4 (4.8) | 13 (28.3) | |
| 1 eye | 3 (3.6) | 3 (6.5) | |
| Both eyes | 1 (1.2) | 10 (21.7) | |
| Follow-up | .000∗ | ||
| No SCR | 51 (61.4) | 14 (30.4) | |
| NPSCR | 23 (27.7) | 10 (21.7) | |
| PSCR | 9 (10.8) | 22 (47.8) | |
| 1 eye | 3 (3.6) | 7 (15.2) | |
| Both eyes | 6 (7.2) | 15 (32.6) | |
| Progression | 20 (24.1) | 17 (37.0) | .122† |
Linear-by-linear association.
Pearson χ2.
