Dr. Dahlen, born in Frederikstad, Norway, is a board certified ophthalmologist, a Fellow of the American College of Surgeons, and the founder of Eye Care for the Adirondacks. He received his medical degree from the Royal College of Surgeons in Dublin, Ireland. His internship brought him to the United States and he completed his residency in ophthalmology at West Virginia University.
Dr. Dahlen also studied subspecialties in glaucoma and retinal disease at the Massachusetts Eye and Ear Infirmary of Harvard Medical School in Boston.
He was Director of the Retina Service and Assistant Professor at West Virginia University Medical School prior to entering private practice in Plattsburgh in 1978, and retired from Eye Care for the Adirondacks in January of 2022.