J Neuroophthalmol 2022 Mar 25. Epub 2022 Mar 25.
University of Toronto, Faculty of Medicine (IS), Toronto, Ontario, Canada; Department of Ophthalmology and Vision Sciences (CL, LD, EM), University of Toronto, Faculty of Medicine, Toronto, Ontario, Canada; and Department of Medicine (EM), Division of Neurology, University of Toronto, Faculty of Medicine, Toronto, Ontario, Canada.
Background: Giant cell arteritis (GCA) is a systemic inflammatory vasculitis that affects medium- and large-sized arteries and can result in permanent vision loss. In rare instances, Horner syndrome has been noticed at the time of GCA diagnosis, although the mechanism of both diagnoses occurring at the same time is not entirely understood. We reviewed 53 charts of all patients diagnosed with biopsy-proven GCA in tertiary neuro-ophthalmology practice to find patients who presented with new onset of Horner syndrome at the time of GCA diagnosis. Read More