Table 2.
Normal ageing* | Early* | Intermediate* | Advanced* | |
---|---|---|---|---|
Drusen | 42 | 496 | 256 | 14 |
Reticular pseudodrusen | 13 | 25 | 31 | 0 |
Pigmentary changes | 11 | 126 | 111 | 8 |
Geographic atrophy | 2 | 14 | 20 | 2 |
Signs of neovascular AMD | 0 | 17 | 12 | 8 |
Stage of AMD according to the Beckman classification definitions, in which persons with small drusen only should be considered to have normal ageing changes. Persons with medium drusen only have early AMD while large drusen and/or pigmentary changes associated with at least medium drusen signify intermediate AMD. Advanced AMD includes lesions due to geographic atrophy or choroidal neovascularisation.