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Updated: Aug 27, 2025
07:11
Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
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Anatomic and refractional correlations in earliest glaucomatous visual field defects
Alexis Galeno Matos1, João Augusto Lima Bisneto2, Felipe Moraes Lopes2
1Fundação Leiria de Andrade, Fortaleza, CE, Brazil.
Arquivos Brasileiros De Oftalmologia
|September 28, 2022
Summary
In glaucoma patients, refractive error (myopia/hyperopia) is linked to initial visual field defects. Hyperopic individuals showed more central scotomas, while myopic patients had more peripheral ones, unlike the disk-fovea angle.
Area of Science:
- Ophthalmology
- Visual Neuroscience
Background:
- Glaucoma can cause central or peripheral visual field scotomas.
- Central scotomas are more severe and impact daily life.
- Anatomical variations may influence scotoma patterns in glaucoma.
Purpose of the Study:
- To investigate the correlation between refractive errors (myopia, hyperopia) and anatomical variations (disk-fovea angle) with initial visual field defects in glaucoma patients.
- To determine if ametropia influences the location of early glaucomatous visual field loss.
Main Methods:
- A cross-sectional study of 52 primary open-angle glaucoma patients.
- Patients were categorized by isolated central or peripheral scotomas (MD > or = -6 dB).
- Correlations were analyzed with ametropia degree and disk-fovea angle.
Main Results:
- A significant association was found between ametropia and scotoma type.
- Hyperopic patients had a higher incidence of central scotomas compared to myopic patients.
- Myopic patients showed a higher incidence of peripheral scotomas than hyperopic patients.
- The disk-fovea angle did not show a correlation with initial scotoma presentation.
Conclusions:
- Ametropia is associated with the pattern of initial visual field defects in glaucoma.
- Hyperopia is linked to central scotomas, and myopia to peripheral scotomas.
- The disk-fovea angle is not a significant factor in the initial presentation of scotomas in glaucoma.
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