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Updated: Jun 22, 2026
07:11
Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
[Characteristics of visual field defects in primary angle-closure glaucoma]
1Kunhua Affiliated Hospital of Kunming Medical College, Kunming 650032, China.
Summary
Acute angle-closure glaucoma (AACG) causes more widespread visual field loss than chronic angle-closure glaucoma (CACG). Primary open-angle glaucoma (POAG) and primary angle-closure glaucoma (PACG) show similar superior and inferior visual field damage patterns.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Visual Field Analysis
Context:
- Glaucoma is a leading cause of irreversible blindness worldwide.
- Angle-closure glaucoma (ACG) encompasses both acute (AACG) and chronic (CACG) forms, presenting distinct clinical characteristics.
- Understanding visual field defect patterns is crucial for accurate diagnosis and management.
Purpose:
- To compare visual field defects between AACG and CACG.
- To analyze visual field changes in primary angle-closure glaucoma (PACG) versus primary open-angle glaucoma (POAG).
Summary:
- This study compared visual field defects in 137 patients across three glaucoma types: CACG (53), AACG (42), and POAG (42). Visual field tests were analyzed using Humphrey Visual Field Analyzer and scored with Advanced Glaucoma Intervention Study (AGIS) criteria.
- Results indicated AACG exhibited more diffused visual field damage and severe central visual field defects compared to CACG. POAG showed a higher rate of central visual field damage (52.38%) than AACG (47.62%) and CACG (22.64%).
- While the nasal area was commonly affected early in all groups, AACG showed greater pattern standard deviation (PSD) than CACG. PACG demonstrated similar superior and inferior hemifield damage patterns to POAG.
Impact:
- Findings highlight distinct visual field defect profiles between AACG and CACG, aiding in differential diagnosis.
- The study provides insights into the progression and localization of visual field loss in different glaucoma subtypes.
- This research can inform targeted treatment strategies and improve patient outcomes in glaucoma management.
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