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[Threshold testing of the macular area in glaucoma]
C Capoferri1, A Garavaglia, M Buscemi
1Clinica Oculistica dell'Università di Milano, Italie.
Journal Francais D'Ophtalmologie
|January 1, 1989
Summary
Automated perimetry using blue targets can detect early glaucoma damage in the central visual field. This method shows significant differences in blue light sensitivity between glaucoma patients and normal subjects.
Area of Science:
- Ophthalmology
- Visual Neuroscience
Context:
- Primary open-angle glaucoma is a leading cause of irreversible blindness.
- Early detection of glaucomatous damage is crucial for timely intervention and vision preservation.
- Automated perimetry is a standard tool for assessing visual field defects.
Purpose:
- To evaluate the efficacy of central threshold testing using an automated perimeter in detecting early glaucomatous damage.
- To compare the sensitivity of white and blue targets in differentiating between glaucomatous eyes and normal controls.
Summary:
- Thirty-one eyes with primary open-angle glaucoma and 32 age-matched normal eyes underwent Macula Threshold Testing with white and blue targets.
- Glaucomatous eyes showed significantly depressed threshold sensitivities to both white and blue targets.
- Blue light thresholds demonstrated a distinct difference between glaucomatous and normal eyes, correlating with age in normals and cup/disc ratios in glaucoma patients.
Impact:
- Findings suggest that automated perimetry with color filters, specifically blue targets, can identify early functional disturbances in the central visual field characteristic of glaucoma.
- This supports the use of advanced perimetric techniques for earlier and more accurate glaucoma diagnosis.