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Updated: May 10, 2026
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
[Functional relationship between retinal sensitivity threshold values assessed by standard automated perimetry in
N Güerri1, V Polo, J M Larrosa
1Servicio de Oftalmología, Hospital Universitario Miguel Servet, Servicio Aragonés de la Salud, Zaragoza, Spain. noemiguerri@hotmail.com
Archivos De La Sociedad Espanola De Oftalmologia
|June 4, 2013
Summary
Glaucoma patients show significant correlations between visual field test points. This functional relationship, linked to optic nerve anatomy, helps identify glaucoma defect patterns using the Humphrey Visual Field Analyzer.
Area of Science:
- Ophthalmology
- Neuroscience
Context:
- Glaucoma diagnosis relies on detecting progressive visual field loss.
- Standard automated perimetry (SAP) with the Humphrey Visual Field Analyzer (HFA) is crucial for monitoring glaucoma progression.
- Understanding the spatial relationships of visual field sensitivity points can refine diagnostic accuracy.
Purpose:
- To investigate the correlation between sensitivity threshold values at different points assessed by the Humphrey Visual Field Analyzer (24-2 SITA standard strategy) in glaucoma patients.
- To map the functional relationships between neighboring and distant points within the same hemifield of the visual field.
Summary:
- A prospective cross-sectional study evaluated 104 eyes of glaucoma patients using the HFA 24-2 SITA standard program.
- Pearson correlation coefficients were calculated to assess relationships between threshold sensitivity values across various points in the upper and lower hemifields.
- Results revealed moderate to high correlations (r≥0.65, P<0.001) between most points within the same hemifield.
Impact:
- Demonstrates a functional interdependency between visual field points in glaucoma patients.
- Suggests that the observed correlations are anatomically based on the arrangement of ganglion cell axons in the optic nerve.
- Highlights the utility of these correlations in characterizing glaucomatous visual field defects and potentially improving diagnostic interpretation.
