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Traumatic optic neuropathy and second optic nerve injuries.

William Marshall Guy1, Charles N S Soparkar2, Eugene L Alford3

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JAMA Ophthalmology
|April 19, 2014
PubMed
Summary
This summary is machine-generated.

Patients experiencing a second traumatic optic neuropathy (TON) event often show limited vision recovery, regardless of initial treatment. This highlights the vulnerability of optic nerve reserve after initial injury.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Trauma Surgery

Background:

  • Traumatic optic neuropathy (TON) treatment controversy exists regarding final vision outcomes.
  • Limited research addresses the impact of TON treatments on optic nerve reserve and outcomes of subsequent injuries.

Purpose of the Study:

  • To evaluate vision improvement in patients experiencing a second incidence of traumatic optic neuropathy (TON).

Main Methods:

  • Retrospective review of 12 patients with a second TON over 18 years.
  • Analyzed vision changes following various treatments: observation, corticosteroids, optic nerve decompression, or combination therapy.

Main Results:

  • Initial TON injuries showed vision improvement with observation, corticosteroids, or decompression (P=.004).
  • Following a second TON event, vision often returned to pre-treatment levels of the first injury.
  • Subsequent treatments for the second TON provided minimal to no vision return (P=.05), contrasting with 82.4% improvement for primary TON treated with decompression.

Conclusions:

  • Recurrent traumatic optic neuropathy (TON) can occur, with limited vision recovery potential.
  • Vision recovery from a second TON event appears independent of the primary treatment strategy.
  • Optic nerve reserve may be compromised after the initial injury, affecting subsequent recovery.