Controls (early and no AMD, n=8) | Intermediate AMD (n=7) | GA (n=15) | P value | |
Age, years | 77 (72, 80) | 82 (70, 86) | 75 (70, 78) | 0.20 |
Binocular VA | 0.04 (−0.04, 0.18) | 0.26 (0.10, 0.40) | 0.32 (0.20, 0.56) | 0.01 |
Better eye VA | 0.10 (0.00, 0.18) | 0.26 (0.20, 0.42) | 0.36 (0.32, 0.60) | <0.01 |
Worse eye VA | 0.28 (0.06, 0.42) | 0.58 (0.26, 1.58) | 0.86 (0.40, 1.02) | 0.01 |
CS | 1.95 (1.65, 1.95) | 1.60 (1.35, 1.65) | 1.60 (1.25, 1.65) | 0.01 |
Better eye AT | 27.8 (26.1, 29.8) | 26.5 (25.8, 27.8) | 23.4 (19.0, 25.6) | <0.01 |
Worse eye AT | 27.0 (25.6, 29.5) | 25.0 (23.8, 27.4) | 20.4 (6.9, 23.8) | <0.01 |
EQ-5D index score | 0.89 (0.72, 1.00) | 0.81 (0.72, 1.00) | 0.77 (0.72, 1.00) | 0.57 |
P values for between-group differences were calculated using Kruskal-Wallis tests.
AMD, age-related macular degeneration; AT, MAIA microperimetry average threshold; CS, Pelli-Robson contrast sensitivity (logCS);GA, geographic atrophy; VA, visual acuity (logMAR).