Table 3.
Prevalence of hard drusen, soft drusen and hyperpigmentation on ultrawide field retinal images (weighted)
| Age (years) | Number at risk | Centre | Mid | Far | Full |
| Hard drusen | |||||
| All ≥55 | 5023 | 62.8 (61.0 to 64.7) | 86.8 (85.4 to 88.1) | 75.6 (74.0 to 77.2) | 94.6 (93.7 to 95.4) |
| <55 | 1115 | 58.6 (55.4 to 61.7) | 85.2 (82.7 to 87.4) | 76.9 (74.1 to 79.6) | 94.4 (92.6 to 95.8) |
| 55–64 | 2392 | 57.0 (54.8 to 59.2) | 86.4 (84.8 to 87.9) | 77.2 (75.2 to 79.0) | 94.9 (93.8 to 95.8) |
| 65–74 | 1971 | 64.6 (62.2 to 67.0) | 87.8 (86.2 to 89.3) | 77.0 (74.8 to 79.0) | 94.7 (93.6 to 95.7) |
| 75–84 | 585 | 69.8 (65.2 to 74.0) | 88.2 (84.9 to 91.0) | 72.6 (68.2 to 76.6) | 94.9 (92.8 to 96.6) |
| ≥85 | 75 | 70.8 (52.3 to 85.2) | 80.4 (64.3 to 91.4) | 68.2 (52.7 to 81.2) | 91.2 (80.3 to 97.2) |
| Soft Drusen | |||||
| All≥55 | 5023 | 5.6 (4.6 to 6.9) | 3.2 (2.6 to 3.9) | 3.7 (3.1 to 4.5) | 8.6 (7.4 to 10.0) |
| <55 | 1115 | 0.8 (0.3 to 1.7) | 0.6 (0.2 to 1.3) | 2.2 (1.2 to 3.5) | 2.8 (1.7 to 4.2) |
| 55–64 | 2392 | 2.3 (1.7 to 3.1) | 2.1 (1.5 to 2.8) | 3.4 (2.5 to 4.4) | 5.5 (4.4 to 6.7) |
| 65–74 | 1971 | 6.5 (5.2 to 8.0) | 4.3 (3.2 to 5.5) | 4.7 (3.6 to 6.0) | 10.0 (8.4 to 11.8) |
| 75–84 | 585 | 10.0 (7.1 to 13.5) | 4.5 (2.6 to 7.1) | 4.2 (2.4 to 7.0) | 12.8 (9.6 to 16.7) |
| ≥85 | 75 | 10.2 (1.9 to 27.9) | 1.3 (0.1 to 4.9) | 0.0 | 10.2 (1.9 to 27.9) |
| Hyperpigmentation | |||||
| All≥55 | 5023 | 2.0 (1.4 to 2.9) | 8.5 (7.1 to 10.2) | 12.5 (10.9 to 14.2) | 14.5 (12.8 to 16.4) |
| <55 | 1115 | 0.8 (0.3 to 1.7) | 2.1 (1.2 to 3.3) | 3.2 (2.1 to 4.6) | 4.6 (3.2 to 6.2) |
| 55–64 | 2392 | 0.9 (0.5 to 1.5) | 3.9 (3.0 to 4.9) | 6.1 (5.0 to 7.4) | 7.6 (6.3 to 9.0) |
| 65–74 | 1971 | 1.9 (1.3 to 2.7) | 8.9 (7.4 to 10.5) | 13.5 (11.7 to 15.5) | 15.5 (13.5 to 17.6) |
| 75–84 | 585 | 3.1 (1.6 to 5.6) | 11.0 (8.0 to 14.6) | 19.0 (15.2 to 23.4) | 20.9 (16.8 to 25.4) |
| ≥85 | 75 | 6.8 (1.5 to 18.4) | 27.9 (13.4 to 46.8) | 27.8 (13.3 to 46.9) | 34.7 (17.9 to 54.7) |
Table 3 shows the prevalence of hard, soft drusen and hyperpigmentation on ultrawide field retinal images (weighted) (eye level). Unweighted and weighted estimates are shown. Data were weighted by age and gender using the 2011 Census for Northern Ireland. The all category is restricted to those over 55 years to enable comparison with other studies who restrict definition of AMD to this age category.