Diabetes is the leading cause of vision loss in people between 18 and 64 years old, according to the American Diabetes Association — and the best way to prevent this is to control blood sugar levels. Glucagon-like peptide-1 receptor agonists (GLP-1s), such as Ozempic and Mounjaro, have become popular medications for controlling diabetes and treating obesity — but new Canadian research suggests they can also lead to a paradoxical side effect in the form of eye problems. A retrospective study conducted from January 2020 to November 2023 included more than 139,000 diabetic patients, some of whom were taking GLP-1s for