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Updated: Dec 6, 2025
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Published on: February 15, 2022
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Disruption of structural brain networks in Primary Open Angle Glaucoma
Summary
Primary open angle glaucoma (POAG) may be a brain condition, not just an eye disease. This study found significant whole-brain connectivity changes in glaucoma patients, suggesting a broader neurological impact.
Area of Science:
- Neuroscience
- Ophthalmology
- Medical Imaging
Background:
- Primary open angle glaucoma (POAG) is a leading cause of irreversible blindness globally.
- Emerging evidence suggests POAG may involve central nervous system (CNS) pathology with secondary visual consequences.
Purpose of the Study:
- To investigate structural whole-brain connectivity alterations in POAG patients.
- To evaluate global brain network reorganization using advanced neuroimaging techniques.
Main Methods:
- Multi-shell diffusion-weighted imaging (DWI) and multi-tissue probabilistic tractography were employed.
- Graph theoretical measures and a novel disruption index were utilized for network analysis.
- Group-wise comparisons were conducted between POAG patients and healthy controls.
Main Results:
- Significant global differences in structural brain connectivity were observed between POAG patients and controls.
- Alterations extended beyond the primary visual pathways, affecting widespread brain networks.
- A statistically significant disruption index indicated global brain network reorganization in POAG.
Conclusions:
- The findings support the hypothesis of POAG as a whole-brain structural reorganization disorder.
- Results suggest POAG may be classified as a brain disconnection syndrome.
- Structural connectivity changes highlight the neurological underpinnings of glaucoma.
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