![](https://www.diabetesnews.com/wp-content/uploads/2017/09/iStock_000063087859_Small-150x150.jpg)
Patients with diabetes who were treated with metformin had almost a 50% lower risk of developing age-related macular degeneration (AMD), according to a new study. The protective effect increased with longer duration of metformin use and with the cumulative dose of metformin, according to the researchers. Read more