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Related Experiment Videos

Glaucomatous optic nerve head changes with scanning laser ophthalmoscopy.

J Marengo1, R A Ucha, M Martinez-Cartier

  • 1Instituto de la Visión, Buenos Aires, Argentina.

International Ophthalmology
|April 12, 2002
PubMed
Summary

Indocyanine green angiography reveals distinct changes in peripapillary capillary vessels across glaucoma stages. Advanced glaucoma shows significant capillary dropout, differentiating it from normal and preperimetric eyes.

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Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Vascular Imaging

Background:

  • Glaucoma is a progressive optic neuropathy characterized by damage to the optic nerve.
  • Early detection of glaucoma is crucial for preserving vision.
  • Peripapillary capillary changes are potential indicators of glaucoma progression.

Observation:

  • Scanning laser ophthalmoscopy (SLO) with indocyanine green angiography (ICG) was used to examine normal, preperimetric, and advanced glaucoma eyes.
  • This imaging technique is sensitive to alterations in peripapillary capillary networks.

Findings:

  • Normal eyes exhibit a preserved disc/cup area ratio and normal prepapillary plexus patterns.
  • Preperimetric glaucoma shows an increased cup area and reduced neuroretinal rim, with enhanced ICG visualization suggesting increased blood flow.

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  • Advanced glaucoma demonstrates a significantly decreased disc/cup area ratio and marked capillary dropout on ICG angiography.

    • Implications:

    • ICG angiography with SLO can differentiate between normal, preperimetric, and advanced glaucoma.
    • Peripapillary capillary changes detected by ICG angiography may serve as early biomarkers for glaucoma.
    • This imaging modality aids in understanding glaucoma pathophysiology and monitoring disease progression.