A recent systematic review and meta-analysis of cohort studies evaluated the association between physical activity and the risk of cataract and age-related macular degeneration (AMD). The analysis included over 1.9 million participants and 163,065 cataract cases, showing that individuals with higher physical activity levels had a significantly lower risk of cataract (RR 0.90; 95% CI: 0.86–0.94) compared with those with low activity. Dose–response analysis further suggested that each 20 MET-hours/week increase in leisure-time physical activity was associated with a modest reduction in cataract risk.
However, the association with age-related macular degeneration was less conclusive (RR 0.92; 95% CI: 0.84–1.01). Overall, the evidence was considered probable for cataract prevention but limited for AMD, highlighting the need for further research. These findings nevertheless support…
