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Related Experiment Videos

The cupped disc. Who needs neuroimaging?

D S Greenfield1, R M Siatkowski, J S Glaser

  • 1Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami School of Medicine, Florida, USA.

Ophthalmology
|October 27, 1998
PubMed
Summary
This summary is machine-generated.

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Neuroradiologic evaluation rarely reveals anterior visual pathway compression in normal-tension glaucoma (NTG) patients. Specific clinical signs like vertical visual field defects and optic nerve pallor may indicate intracranial mass lesions.

Area of Science:

  • Ophthalmology
  • Neurology
  • Radiology

Background:

  • Normal-tension glaucoma (NTG) can present with optic disc cupping and visual field loss, mimicking compressive lesions.
  • Differentiating NTG from intracranial mass lesions is crucial for appropriate patient management.

Purpose of the Study:

  • To assess the incidence of positive neuroradiologic findings in patients with NTG.
  • To compare clinical and psychophysical characteristics of NTG eyes with those affected by intracranial masses.

Main Methods:

  • Retrospective case-controlled study comparing 29 NTG patients with 28 patients with intracranial masses.
  • Review of medical records, brain MRI/CT scans, optic nerve photographs, and visual fields.
  • Masked assessment of neuroradiologic findings, clinical characteristics, optic nerve appearance, and visual field defects.

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Main Results:

  • No neuroradiologic evidence of mass lesions was found in the NTG group.
  • NTG patients were older, had better visual acuity, greater neuroretinal rim tissue loss, more optic disc hemorrhages, less pallor, and horizontal midline visual field defects.
  • Specific indicators for compressive lesions included visual acuity <20/40, vertical visual field defects, optic nerve pallor exceeding cupping, and age <50 years.

Conclusions:

  • Anterior visual pathway compression is infrequent in NTG patients.
  • Younger age, poorer visual acuity, vertical visual field defects, and optic nerve pallor suggest potential intracranial pathology.