Brian Toy, MD

Assistant Professor of Clinical Ophthalmology

Director of Clinical Informatics and Information Technology

Service Chief of the Uveitis and Ocular Inflammation Service

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Overview

Brian Toy, MD, is a vitreoretinal fellow and clinical instructor at the USC Roski Eye Institute. He graduated magna cum laude from the University of California, Berkeley, with a degree in bioengineering, received an MD with distinction from the University of California, San Francisco, and completed a clinical research fellowship at the National Institutes of Health. He completed an internship at Santa Clara Valley Medical Center, a major county healthcare system in the Bay Area, and then completed an ophthalmology residency at Stanford University. Toy’s professional interests include retinal imaging, telemedicine and safety net care, particularly as applied to diabetic retinopathy. Outside of work, he enjoys hiking, skiing, and spending time with friends and family.

Publications

  • Comparative risk of glaucoma surgery in uveitis-associated versus primary open-angle glaucoma: a multicentre database study. Can J Ophthalmol. 2026 Jul 02.. View in PubMed
  • A CASE OF REFRACTORY IDIOPATHIC RETINITIS, VASCULITIS, ANEURYSMS, AND NEURORETINITIS RESPONSIVE TO INFLIXIMAB AND MYCOPHENOLATE MOFETIL. Retin Cases Brief Rep. 2026 Jul 01; 20(4):562-567.. View in PubMed
  • Semaglutide and Neovascular Age-Related Macular Degeneration among Adults with Type 2 Diabetes: An Observational Health Data Sciences and Informatics Network Study. Ophthalmology. 2026 Jun 02.. View in PubMed
  • Racial and microvascular determinants of progression to treatment-warranted diabetic eye disease. Eye (Lond). 2026 Jun; 40(9):1371-1377.. View in PubMed
  • Safety of Pharmacologic Dilation: Incidence and Risk Factors of Acute Angle Closure in a Nationwide Cohort. Am J Ophthalmol. 2026 Mar; 283:138-148.. View in PubMed
  • Semaglutide and diabetic retinopathy: an OHDSI network study. BMJ Open Diabetes Res Care. 2025 Nov 04; 13(6).. View in PubMed
  • Uveitis Risk and GLP-1RA Use-Signal, Confounding, or Both? JAMA Ophthalmol. 2025 Oct 01; 143(10):832-833. Toy BC , Hong AT . View in PubMed
  • Intravitreal anti-VEGF therapy and risk of limb complications in individuals with diabetic eye disease. Diabetes Res Clin Pract. 2025 Nov; 229:112457.. View in PubMed
  • Outpatient Oral Doxycycline versus Intravenous Penicillin for Syphilitic Uveitis. Ophthalmology. 2025 Dec; 132(12):1457-1459.. View in PubMed
  • Longitudinal Trends in Resource Utilization Associated With Newly Diagnosed Primary Angle Closure Glaucoma in the United States. J Glaucoma. 2025 10 01; 34(10):776-782.. View in PubMed