Mouth cells could bring sight back to the blind

This study tests a new treatment for people who have lost vision in both eyes due to severe burns or rare eye diseases. Doctors take a small sample of cells from the inside of the patient's cheek, grow them into a thin sheet in the lab, and then transplant that sheet onto the damaged eye surface. The goal is to restore a clear cornea and improve vision. The trial involves 40 adults and will check safety and whether eyesight gets better over 24 months.