Quercetin for diabetic retinopathy: from molecular targets to targeted delivery strategies.
INTRODUCTION Diabetic retinopathy is a leading cause of preventable vision loss, driven by coupled oxidative, inflammatory, neurodegenerative, and angiogenic injury; current anti-VEGF and laser therapies act mainly on the late vascular stage and leave the upstream injury largely untreated. Quercetin, a dietary flavonol...