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Peripapillary Ovoid Hyperreflectivity in Optic Disc Edema and Pseudopapilledema

      Optic disc drusen (ODD) are acellular prelaminar calcifications in the optic nerve head found in approximately 1% to 2% of the population. They are often asymptomatic, but peripheral visual field defects are common and acute vision loss, due to ischemic optic neuropathy, is known to occur. The morphology of ODD on OCT is characterized by a signal-poor core surrounded by a hyperreflective margin.
      • Malmqvist L.
      • Bursztyn L.
      • Costello F.
      • et al.
      The Optic Disc Drusen Studies Consortium recommendations for diagnosis of optic disc drusen using optical coherence tomography.
      Occasionally, this core may be associated with small hyperreflective aggregates or horizontal lines. Enhanced depth imaging OCT has been found to visualize ODD structure, size, and shape better than other imaging modalities because of improved penetrance.
      • Malmqvist L.
      • Bursztyn L.
      • Costello F.
      • et al.
      The Optic Disc Drusen Studies Consortium recommendations for diagnosis of optic disc drusen using optical coherence tomography.
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