Jithin Yohannan, M.D., M.P.H.

Dr. Yohannan received his Medical Degree and Master of Public Health degree from Johns Hopkins University and completed an ophthalmology residency at the Wilmer Eye Institute, Johns Hopkins University. He completed a fellowship in Glaucoma and Advanced Anterior Segment Surgery at the University of Toronto with Dr. Ike Ahmed. Dr. Yohannan is an Assistant Professor of Ophthalmology at the Wilmer Eye Institute, Johns Hopkins University School of Medicine. His practice specializes in medical, laser, and surgical treatment of glaucoma with a focus on minimally invasive glaucoma surgery (MIGS) and new glaucoma surgical devices. He also performs both routine and complex cataract surgery. Dr. Yohannan also specializes in the surgical management of complex problems of the anterior segment including post-trauma, dislocated intraocular lenses, iris and pupil defects.

Gregory Ogawa, M.D.

Dr. Ogawa received his medical degree from University of Rochester School of Medicine. He completed an ophthalmology residency at Medical College of Wisconsin and a fellowship in Cornea and External Disease at the Wilmer Eye Institute at Johns Hopkins University. Dr. Ogawa is a cornea & external disease specialist in private practice in Albuquerque, NM. He is an Assistant Clinical Professor of Ophthalmology at the University of New Mexico. He has authored numerous peer reviewed journal articles and is a frequent invited lecturer at ophthalmology meetings and instruction courses. Dr. Ogawa has designed more than twenty ophthalmic surgical instruments. His research interests include anterior segment reconstruction, surgical instrument design and post-cataract surgery infection.

Mark Greiner, M.D.

Mark Greiner, MD

Dr. Greiner received his medical degree and completed his residency in ophthalmology at the University of California at Davis. He completed his fellowship training in Cornea and External Diseases at Devers Eye Institute in Portland, Oregon. Dr. Greiner is an Associate Professor of Ophthalmology at the University of Iowa and Director of the Cornea and External Disease Service. Since joining the faculty at Iowa, Dr. Greiner has pursued his interests in eye banking and endothelial keratoplasty. He currently serves as the Medical Director of the Iowa Lions Eye Bank. He is a clinician-scientist with a translational research laboratory based at Iowa Lions Eye Bank that focuses on corneal endothelial cell metabolic function and keratoplasty outcomes. He received the Robert and Joell Brightfelt Professorship in Cornea Research in 2018. Dr. Greiner is a frequent invited lecturer and has numerous peer-reviewed publications.

David Brown, MD

Dr. Brown received his medical degree from Baylor College of Medicine. He completed ophthalmology residency and a vitreoretinal surgery fellowship at the University of Iowa, where he was a Thomas Heed Fellow, a Hermann-Knapp Fellow, and was awarded the Ron Michels Fellowship award presented to the top retinal surgery fellow in the U.S. Dr. Brown is a retina surgeon and clinical trial specialist in private practice at Retinal Consultants of Houston. Dr. Brown is the director of the Greater Houston Retina Research Center, a Clinical Professor of Ophthalmology at Baylor College of Medicine and the Vice-Chair of Ophthalmology for Research at the Blanton Eye Institute at Houston Methodist Hospital. Dr. Brown has written and published over 300 scientific papers, national meeting presentations and abstracts, including many of the primary papers establishing the current standards of care for AMD, retinal vein occlusion, and diabetic retinopathy. Dr. Brown’s surgical interests are focused on the treatment and research of macular conditions such as macular hole, macular pucker, and age-related macular degeneration and he has developed subretinal gene therapy techniques used for AMD and inherited retinal dystrophies. Dr. Brown serves as the Consultant Retina Specialist for NASA.

Brian Mohney, MD

Dr. Mohney received his medical degree from Texas A&M University College of Medicine. He completed his ophthalmology residency at Mayo Clinic College of Medicine and a fellowship in Pediatric Ophthalmology and Strabismus at the Children’s National Medical Center. Currently, Dr. Mohney is Professor of Ophthalmology at the Mayo Clinic, Rochester. He has numerous peer-reviewed publications and his research interests focus on epidemiology of strabismus, intermittent exotropia, retinoblastoma andgenetics of strabismus. He is a member of the Pediatric Eye Disease Investigator Group.

John Chen, M.D., PhD

Dr. Chen attended the University of Virginia for his undergraduate and medical degrees, and PhD in Neuroscience. He completed his residency and Neuro-Ophthalmology fellowship training at the University of Iowa. He is currently at the Mayo Clinic as an Associate Professor of Ophthalmology and Neurology. Dr. Chen is currently the associate residency program director and has received numerous teaching awards. He is the Chair of the Upper Midwest Neuro-Ophthalmology Group and is on multiple committees for the American Academy of Ophthalmology and North American Neuro-Ophthalmology Society. He has received the Achievement Award from the American Academy of Ophthalmology and serves on the board of the Minnesota Academy of Ophthalmology. He has over 70 peer reviewed publications and has received several research awards. His main research interests are in imaging, idiopathic intracranial hypertension, and neuro-immunology of the optic nerve.