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Related Experiment Videos

Histopathologic studies of ischemic optic neuropathy.

D L Knox1, J B Kerrison, W R Green

  • 1W. Richard Green Eye Pathology Laboratory, Wilmer Institute, and Department of Pathology, Johns Hopkins Medical Institution, Baltimore, USA.

Transactions of the American Ophthalmological Society
|February 24, 2001
PubMed
Summary

This study defines the histopathologic features of ischemic optic neuropathy, revealing initial edema and later atrophy. Cavernous lesions with mucopolysaccharide are present weeks after vision loss, potentially causing progressive vision impairment.

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Area of Science:

  • Ophthalmology
  • Neuropathology

Background:

  • Ischemic optic neuropathy (ION) is a leading cause of vision loss.
  • Understanding its histopathologic progression is crucial for diagnosis and management.

Purpose of the Study:

  • To characterize the histopathologic features of eyes diagnosed with ischemic optic neuropathy between 1951 and 1998.
  • To correlate histopathologic findings with clinical history and time of vision loss.

Main Methods:

  • Retrospective analysis of 193 eyes with ION diagnoses.
  • Documentation of patient demographics, clinical history, and tissue source.
  • Histopathologic examination for ischemic edema, cavernous degeneration, and atrophy.

Main Results:

  • Atrophic lesions were the most common pattern (66.8%), followed by cavernous degeneration (36%).

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  • Ischemic edema was observed in 13.5%, progressing to macrophage infiltration.
  • Mucopolysaccharide (MPS) was found in cavernous lesions present 4 weeks or longer after vision loss.

    • Conclusions:

    • ION lesions evolve from acellular edema to macrophage infiltration and atrophy.
    • Cavernous lesions with MPS indicate a later stage of the disease.
    • Progressive vision loss may result from nerve compression or secondary ischemic events.