John P. Berdahl, MD

John Berdahl, MD is a board-certified ophthalmologist at Vance Thompson Vision in Sioux Falls, South Dakota, and a professor at the University of South Dakota, specializing in cataract, cornea, glaucoma, and refractive surgery. He trained at Mayo Medical School, Duke University, and Minnesota Eye Consultants, and is one of a rare few U.S. surgeons with fellowship training across cornea, glaucoma, and refractive surgery. An award-winning researcher and published author, Dr. Berdahl is also dedicated to global eye care access through surgical mission work and leadership in programs serving underserved communities.