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Short-Term Deterioration of Visual Acuity and Visual Fields in Nonarteritic Anterior Ischemic Optic Neuropathy.

Am J Ophthalmol

December 2024

From the Department of Ophthalmology and Visual Sciences, University of Toronto (H.M.M., A.H., and E.M.), Toronto, ON, Canada; Department of Medicine, Division of Neurology, University of Toronto (E.M.), Toronto, ON, Canada. Electronic address:

Article Synopsis
  • The study aimed to evaluate how often and severely patients experienced additional vision loss after being diagnosed with acute nonarteritic anterior ischemic optic neuropathy (NAION) within ten weeks.
  • Researchers reviewed electronic medical records from an academic neuro-ophthalmology practice, focusing on patients diagnosed with NAION between February 2014 and December 2023 who sought follow-up care within a ten-week timeframe.
  • Results indicated that a significant number of patients (41%) experienced clinically significant deterioration in visual function, with a notable percentage showing serious declines in best corrected visual acuity (BCVA) and peripheral visual fields (VF) during the acute phase of NAION.
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