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Nathan Troy Tagg

Associate Professor in Ophthalmology
Ophthalmology, Neuro-Ophthalmology

Overview


N Troy Tagg, MD (Associate Professor in Ophthalmology) joined us from The Uniformed Services
University and Walter Reed National Military Medical Center in Bethesda, MD. He completed his Neuro-
Ophthalmology fellowship in the Department of Ophthalmology and Visual Sciences at The University of
Iowa in Iowa City, IA. Dr. Tagg completed residency training in neurology at Walter Reed Army Medical
Center (Washington, DC) and National Naval Medical Center (Bethesda, MD). He earned his Doctor of
Medicine degree from the University of Iowa Carver College of Medicine. His interests include
autoimmune conditions that affect vision (neuromyelitis optica, multiple sclerosis, myasthenia gravis,
etc.), vascular disorders, and pseudotumor cerebri, among others. He sees patients at the Main Eye
Center in Durham.

Current Appointments & Affiliations


Associate Professor in Ophthalmology · 2021 - Present Ophthalmology, Neuro-Ophthalmology, Ophthalmology
Chief, Neuro Ophthalmology · 2023 - Present Ophthalmology, Neuro-Ophthalmology, Ophthalmology
Associate Professor of Neurology · 2021 - Present Neurology, Clinical Science Departments

Recent Publications


Ocular Calciphylaxis in a 46-year-old Man on Hemodialysis

Journal Article Ophthalmology · January 1, 2026 Full text Cite

Effectiveness of Infliximab for Refractory Nonischemic Cerebral Enhancing Foreign-Body Granulomatous Lesions After Endovascular Therapy.

Journal Article Neurology · November 25, 2025 OBJECTIVES: Nonischemic cerebral enhancing (NICE) foreign-body granulomatous lesions are an immune-mediated complication of endovascular therapy (EVT). No single immunotherapy has demonstrated consistent effectiveness. We highlight the novel use of tumor n ... Full text Link to item Cite

Retinal Layer Thickness and Volume Measurements in Traumatic Brain Injury.

Journal Article J Vitreoretin Dis · September 3, 2025 Purpose: To assess retinal layer thickness and volume by optical coherence tomography (OCT) in patients with prior traumatic brain injury (TBI). Methods: Adults (≥18 years) with prior TBI were prospectively recruited. 512 × 128-mm macular cube scans were o ... Full text Link to item Cite
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Recent Grants


Treatment of Inflammatory Myelitis and Optic Neuritis with Early versus Rescue Plasma Exchange

ResearchPrincipal Investigator · Awarded by Mayo Clinic - Rochester · 2025 - 2031

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Education, Training & Certifications


University of Iowa, Roy J. and Lucille A. Carver College of Medicine · 2001 M.D.