John Berdahl, MD
Surgeon & Partner
Vance Thompson Vision / Equinox / Expert Opinion
Practicing in Sioux Falls, SD is board-certified ophthalmologist, John Berdahl, MD. He is regarded as a leading international cataract surgeon. He is one of very few surgeons in the United States who is also fellowship trained in cornea, glaucoma, and refractive surgery. Dr. Berdahl has performed more than 25,000 eye surgeries around the globe. His published work has primarily focused on the fundamental causes of Glaucoma, Minimally Invasive Glaucoma Surgery, and Astigmatism Management, during and after cataract surgery. He has been involved in FDA monitored clinical trials on some of the most exciting technologies in ophthalmology. He also founded Equinox, which is developing the first non-surgical, non-pharmacologic way to lower eye pressure for glaucoma treatment. He co-invented the MKO melt, which provides sedation during cataract surgery without the use of an IV. Additionally, he created astigmatismfix.com which helps thousands of surgeons per month fix residual astigmatism after cataract surgery. Finally, in effort to improve access to care, he co-founded ExpertOpinion.MD which provides online opinions to patients from top doctors around the world. Although Dr. Berdahl has many accomplishments, his primary driver is the trust that people place in him, particularly meeting his patients in their moments of vulnerability and putting their needs first. His commitment to the underserved is demonstrated by his leadership in EyeCare America, as well as in the Mission Vision program at Vance Thompson Vision, where he performs dozens of free surgeries every year. Dr. Berdahl also continues to serve the impoverished-on mission trips world-wide.
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