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Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
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Traumatic optic nerve avulsion: A case report.

C Paya1, M-N Delyfer, F Thoumazet

  • 1Service d'ophtalmologie, CHU de Bordeaux Pellegrin, bâtiment T, place Amélie-Raba-Léon, 33000 Bordeaux, France. clementpaya@hotmail.com

Journal Francais D'Ophtalmologie
|January 17, 2012
PubMed
Summary
This summary is machine-generated.

Traumatic optic nerve avulsion, a rare but severe injury, can be missed if vitreous hemorrhage is present. Orbital imaging is crucial for diagnosis in such cases.

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Area of Science:

  • Ophthalmology
  • Trauma Surgery

Background:

  • Presents a case report of traumatic optic nerve avulsion.
  • Highlights the diagnostic challenges associated with this rare injury.

Observation:

  • An 11-year-old boy sustained a right optic nerve avulsion from surfboard contusion.
  • Initial findings included bilateral mydriasis, right afferent pupillary defect, and no light perception.
  • Fundus examination revealed retinal ischemia, edema, vascular occlusion, and a hole where the optic nerve should be, with vitreous hemorrhage.

Findings:

  • Orbital imaging (CT, MRI) showed vitreous prolapse into the optic nerve sheath.
  • Spectral domain OCT and visual evoked potentials confirmed ganglion cell layer disruption.
  • The optic nerve sheath remained attached to the globe despite the avulsion.

Implications:

  • Optic nerve avulsion diagnosis can be obscured by vitreous hemorrhage.
  • Orbital imaging is essential for clarifying diagnosis in suspected cases.
  • Optic nerve avulsions share risk profiles with open globe injuries and arterial occlusions.