
Dr. Jun is Associate Professor of Ophthalmology at the Wilmer Eye Institute, Johns Hopkins University School of Medicine. Dr. Jun specializes in corneal disorders including Fuchs dystrophy and keratoconus, refractive surgery, cataract, and external eye diseases. As a cornea specialist and geneticist, Dr. Jun's clinical and research interests include endothelial keratoplasty, laser refractive surgery, genetic analysis of corneal diseases, and corneal gene therapy.
Dr. Jun attended college at Harvard University and received his M.D. and Ph.D. degrees from Emory University. He completed ophthalmology residency at the Wilmer Eye Institute and fellowship in cornea, external diseases, and corneal gene therapy at the internationally renowned Moorfields Eye Hospital in London, England. After fellowship, Dr. Jun returned to Wilmer as the recipient of the prestigious Maumenee Clinician Scientist Award and served as Assistant Chief of Service (Chief Resident) and Associate Director of Ocular Trauma.
Dr. Jun's clinical and research activities have been recognized with grants and awards from numerous organizations including the National Institutes of Health, the Heed Ophthalmic Foundation, the Eye Bank Association of America, and the Association of University Professors of Ophthalmology.





