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Updated: Jul 30, 2026
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Fully automated screening procedure for early detection of visual field defects
Journal of Biomedical Engineering
|April 1, 1986
Summary
This study introduces a novel instrument for rapid glaucoma screening, significantly reducing visual field testing time. The new method accurately detects scotoma, offering a faster alternative for mass screening programs.
Area of Science:
- Ophthalmology
- Medical instrumentation
- Visual psychophysics
Background:
- Glaucoma diagnosis relies on detecting visual field defects (scotoma).
- Current mass screening methods for glaucoma are time-consuming.
- Rapid and accurate visual field testing is crucial for early glaucoma detection.
Purpose of the Study:
- To develop and evaluate a novel, rapid, and automated instrument for visual field sensitivity testing.
- To assess the instrument's speed and accuracy in detecting scotoma compared to conventional methods.
Main Methods:
- A new instrument presents luminous points on a CRT screen.
- Patients respond vocally with the number of observed points (0-4).
- A 288-point visual field test is completed via 90 sequential patterns, generating a scotoma map.
Main Results:
- The developed instrument significantly reduces examination time compared to conventional automatic tests.
- Results from the novel instrument closely match those of two commercial perimetry devices.
- Initial clinical trials demonstrate encouraging outcomes for the new visual field testing approach.
Conclusions:
- The novel instrument offers a faster and automated solution for visual field testing in glaucoma screening.
- This technology has the potential to improve the efficiency of mass glaucoma screening programs.
- The instrument's accuracy and speed make it a promising tool for clinical ophthalmology.
