Table 1. Characteristics of the study population.
| Laterality |
||
|---|---|---|
| Right eyes | Left eyes | |
| Number of patients | 200 | |
| Age (years) | 74.3 ± 8.8‡ | |
| Sex (male:female) | 143:57 | |
| Refraction (diopter) | 0.24 ± 2.30‡ | 0.23 ± 2.19‡ |
| Drusen | ||
| No drusen or only non-extensive hard drusen | 41 (20.5%) | 42 (21.0%) |
| Large soft drusen | 52 (26.0%) | 53 (26.5%) |
| Extensive soft drusen* | 33 (16.5%) | 27 (13.5%) |
| Pseudodrusen | 18 (9.0%) | 18 (9.0%) |
| Calcified drusen | 3 (1.5%) | 2 (1.0%) |
| RPE abnormality apart from the CNV legion | 61 (30.5%) | 58 (29.0%) |
| Choroidal vascular dilatation (0:1:2:3)† | 123:56:20:1 | 134:48:14:4 |
| Choroidal vascular hyperpermeability | 33 (16.5%) | 28 (14.0%) |
| Subfoveal choroidal thickness (μm) | 227± 101‡ | 229 ± 109‡ |
*More than 6 drusen (>63 μm each) in ETDRS grid.
†Number of quadrants.
‡mean ± standard deviation are shown.
AREDS: Age-related Eye Disease Study, RPE: retianl pigment epithelium. CNV: choroidal neovascularization.
ETDRS: early treatment diabetic retinopathy study.