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Optic neuritis in African Americans

P H Phillips1, N J Newman, M J Lynn

  • 1Department of Ophthalmology, Emory University School of Medicine, Atlanta, Ga, USA.

Archives of Neurology
|March 3, 1998
PubMed
Summary

African Americans with demyelinating optic neuritis experienced more severe vision loss at onset and after one year compared to white patients and those in the Optic Neuritis Treatment Trial (ONTT). Multiple sclerosis in this group often presented as neuromyelitis optica.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Clinical Neurology

Background:

  • Demyelinating optic neuritis is a significant cause of vision loss.
  • Understanding ethnic disparities in optic neuritis presentation and outcomes is crucial for targeted patient care.

Purpose of the Study:

  • To delineate the clinical characteristics of demyelinating optic neuritis specifically in African American patients.
  • To compare the visual outcomes and disease progression of African American patients with those of white patients and historical cohorts.

Main Methods:

  • Retrospective review of medical records for patients diagnosed with optic neuritis between 1989 and 1996.
  • Inclusion criteria: African American and white patients aged 15-55 with a single episode of acute optic neuritis.
  • Comparison groups included white patients from the same centers and data from the Optic Neuritis Treatment Trial (ONTT).

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Main Results:

  • African American patients exhibited significantly more severe visual loss at presentation (93% vs. 39% for white patients) and at 1-year follow-up (17% vs. 5% for white patients).
  • No significant differences were observed in sex, age, disc edema, MRI lesions, or initial multiple sclerosis diagnosis between ethnic groups.
  • Among African American patients diagnosed with multiple sclerosis, 58% presented with neuromyelitis optica.

Conclusions:

  • African American individuals with demyelinating optic neuritis face poorer visual prognoses compared to white individuals and the general ONTT cohort.
  • The high incidence of neuromyelitis optica in African American patients with multiple sclerosis highlights a distinct disease manifestation in this population.