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Validation of a Tablet as a Tangent Perimeter
Algis J Vingrys1, Jessica K Healey1, Sheryl Liew1
1Department of Optometry & Vision Sciences Melbourne School of Health Sciences, University of Melbourne, 3010, Victoria, Australia.
Translational Vision Science & Technology
|August 4, 2016
Summary
The Melbourne Rapid Field (MRF) uses iPad technology for efficient and reliable visual field testing up to 30 degrees. This portable tangent perimeter is suitable for various settings, including remote areas and bedside use.
Area of Science:
- Ophthalmology
- Medical Devices
- Visual Field Testing
Background:
- Traditional visual field testing equipment can be expensive and immobile.
- There is a need for accessible and portable visual field assessment tools.
Purpose of the Study:
- To introduce and describe the Melbourne Rapid Field (MRF), a novel tangent perimeter developed on an Apple iPad.
- To evaluate the efficacy and reliability of the MRF for visual field assessment.
Main Methods:
- The MRF analyzes 66 visual field locations within a 28° × 18° range.
- Spot size and background luminance are dynamically adjusted to maintain constant visual thresholds.
- The system's ability to detect simulated visual field defects was validated in human participants.
Main Results:
- The MRF achieves constant visual thresholds across all tested locations.
- Testing is minimally affected by variations in viewing distance and ambient lighting.
- The device successfully detected simulated visual field defects, demonstrating its clinical utility.
Conclusions:
- iPad-based tablet technology can effectively function as a reliable tangent perimeter for visual field testing up to 30 degrees.
- The MRF offers a cost-effective and portable solution for visual field testing in diverse clinical and remote environments.
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