Overview
- A systematic review and meta-analysis pooling 41 observational studies presented at the ESCRS congress found higher exposure to fine particulate matter (PM2.5) is associated with greater odds of glaucoma and cataract.
- People in the most polluted areas had up to 70% higher odds of glaucoma, and the study reported roughly an 8% rise in glaucoma risk and a 4% rise in cataract risk for each meaningful increase in PM2.5.
- Researchers presented the results on Monday as conference research drawing on data from millions of people mainly in East Asia and the United Kingdom, and they stressed the work remains unpublished and observational.
- Authors propose a biological pathway in which tiny particles cause inflammation and oxidative stress that, over years, could damage the optic nerve (glaucoma) or the lens (cataract); links to age-related macular degeneration were weaker.
- The team and outside experts say the findings strengthen the public-health case for tighter air-quality measures such as reduced traffic and more green space, but they call for peer-reviewed studies and research in highly polluted regions to test causality and generalizability.