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Updated: May 2, 2026
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
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Utility values for glaucoma in Brazil and their correlation with visual function.
Ricardo Augusto Paletta Guedes1, Vanessa Maria Paletta Guedes1, Sirley Maria Freitas2
1Federal University of Juiz de Fora, Juiz de Fora, Brazil ; Paletta Guedes Ophthalmological Center, Juiz de Fora, Brazil ; Santa Casa de Misericórdia Hospital, Juiz de Fora, Brazil.
Clinical Ophthalmology (Auckland, N.Z.)
|March 21, 2014
Summary
Utility values in Brazilian patients with primary open-angle glaucoma (POAG) were identified. Advanced vision loss, measured by visual acuity (VA) and mean deviation index, significantly lowered these utility values.
Area of Science:
- Ophthalmology
- Health Economics
- Quality of Life Research
Background:
- Primary open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
- Understanding patient-reported outcomes, such as utility values, is crucial for treatment evaluation.
- Limited data exists on utility values for POAG patients in Brazil.
Purpose of the Study:
- To determine utility values in Brazilian patients diagnosed with POAG.
- To assess the impact of visual acuity (VA) and mean deviation index on these utility values.
Main Methods:
- Cross-sectional study involving 227 consecutive POAG patients.
- Utility values were measured using time trade-off (TTO) and two standard gamble methods (SG1, SG2).
- Visual function (VA, mean deviation index) and sociodemographic data were collected for analysis.
Main Results:
- Mean utility values were 0.82 (TTO), 0.90 (SG1), and 0.93 (SG2).
- Age, race, and sex did not influence utility values; higher education showed a trend towards higher TTO values.
- Worse visual function (lower VA, higher mean deviation index) correlated with lower utility values across all methods.
Conclusions:
- This study provides utility values for Brazilian POAG patients.
- Utility values are significantly affected by the severity of vision loss in POAG.
- These findings can inform health policy and economic evaluations for glaucoma management.
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