The association between reduced binocular visual acuity and lower physical activity across all light levels almost reached significance in the unadjusted analysis (all, P = 0.05); however, in the analysis adjusted for age and gender, these associations were not significant (all, P ≥ 0.09) but exhibited trends toward lower physical activity under scotopic to mid-mesopic (low) light levels for those with greater reductions in binocular visual acuity.
The proportion of females was higher in the AMD group (64%) compared to the control group (29%), but this difference failed to reach significance ( P = 0.06).
25 , 26 Importantly, we also found that the association between reduced visual acuity and lower levels of physical activity in the AMD group approached significance under low light levels, whereas these associations were not significant under other light levels.
Although not significantly different, our findings showed a trend for lower physical activity levels across all of the light levels in the older adults with AMD compared to controls, which supports findings from previous studies demonstrating that older adults with AMD are less likely to be active compared to those with normal vision. 25 , 26 Importantly, we also found that the association between reduced visual acuity and lower levels of physical activity in the AMD group approached significance under low light levels, whereas these associations were not significant under other light levels.