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Updated: Mar 9, 2026
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Rat Model of Photochemically-Induced Posterior Ischemic Optic Neuropathy
Published on: November 29, 2015
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Pathology of Ischemic Optic Neuropathy.
Hershel R Patel, Curtis E Margo1
1From the Departments of Ophthalmology (Drs Patel and Margo), Pathology and Molecular Biology (Dr Margo), Morsani College of Medicine, University of South Florida, Tampa.
Archives of Pathology & Laboratory Medicine
|December 29, 2016
Summary
Ischemic optic neuropathy (ION) involves optic nerve hypoxic injury. Understanding its histology and pathogenesis is crucial for diagnosing and treating this condition, despite limited case studies.
Area of Science:
- Ophthalmology
- Neurology
- Pathology
Background:
- Ischemic optic neuropathy (ION) is optic nerve hypoxic injury.
- ION presents as anterior (disc swelling) or posterior (no swelling) forms.
- It's classified as arteritic (vasculitis) or nonarteritic.
Purpose of the Study:
- To review the clinical and histological features of ischemic optic neuropathy.
- To highlight the pathogenesis and diagnostic challenges of ION.
- To discuss variants like cavernous degeneration.
Main Methods:
- Histological examination of ION cases.
- Clinical presentation analysis.
- Literature review on pathogenesis.
Main Results:
- ION involves axon/glial necrosis, edema, and mononuclear response.
- Anterior ION (arteritic) involves posterior ciliary arteries.
- Nonarteritic ION lacks mechanical vascular obstruction.
- Cavernous degeneration is a variant with cystic spaces.
Conclusions:
- Histological findings in ION are time-dependent.
- Mimics of cavernous degeneration exist.
- Limited histological studies hinder full understanding of ION pathogenesis.
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