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Comparison of a five-degree visual field between two programs of different testing field range
1Department of Ophthalmology and Visual Science, Graduate School of Medicine, Chiba University, Chiba, Japan. fujimoto@faculty.chiba-u.jp
American Journal of Ophthalmology
|April 25, 2007
Summary
The 10-2 program showed higher sensitivity in the central five-degree visual field compared to the 30-2 program in open-angle glaucoma patients. Automated perimetry results depend on the testing field size used.
Area of Science:
- Ophthalmology
- Visual Science
Background:
- Automated perimetry is crucial for diagnosing and monitoring glaucoma.
- The size of the testing field in perimetry may influence diagnostic accuracy.
Purpose of the Study:
- To compare visual field sensitivity using two different testing field sizes (10-2 and 30-2 programs).
- To investigate the impact of testing field size on visual field results in open-angle glaucoma.
Main Methods:
- An observational study involving 46 patients with open-angle glaucoma.
- Patients underwent visual field testing using Humphrey field analyzer with 10-2 and 30-2 full threshold programs.
- Forty reliable results from both programs were analyzed.
Main Results:
- The 10-2 program demonstrated significantly higher sensitivity within the central five-degree visual field compared to the 30-2 program.
- Sensitivity in the five-degree field using the 10-2 program showed a significant correlation with the sensitivity obtained by the 30-2 program.
Conclusions:
- The testing field size significantly influences visual field results obtained through automated perimetry.
- Careful consideration of testing field size is necessary for accurate glaucoma assessment.
