Overview

• A peer-reviewed analysis in PNAS Nexus associates lower exposure to NO2 and PM2.5 with better uncorrected eyesight after accounting for genetics and lifestyle using machine learning.
• Primary-school children showed the strongest benefits from cleaner air, while older pupils and those with high myopia were more influenced by genetic factors.
• Researchers describe plausible pathways such as ocular inflammation, reduced sunlight exposure, and chemical changes that may contribute to myopia, noting these mechanisms are not yet proven.
• Suggested actions include installing classroom air purifiers, creating clean-air zones around schools, and restricting traffic at drop-off and pick-up times.
• Coverage places the results within ongoing UK scrutiny of vehicle emissions, including a High Court class action due next month over alleged diesel emissions-cheating.