Doctors have found that metformin, an everyday medicine for diabetes, is associated with less progression of age-related macular degeneration (AMD), the most common cause of blindness in western countries. In a recent study, people with diabetes over the age of 55 years taking metformin were 37% less likely to develop the intermediate stage of AMD over a five-year period compared to those not taking metformin.
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Everyday diabetes medicine could treat common cause of blindness
February 7, 2026
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