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Comparative Study Between the SORS and Dynamic Strategy Visual Field Testing Methods on Glaucomatous and Healthy
Şerife Seda Kucur1, Sebastian Häckel2, Jan Stapelfeldt1
1Artificial Intelligence in Medical Imaging Laboratory, ARTORG Center for, Biomedical Engineering Research, University of Bern, Bern, Switzerland.
Translational Vision Science & Technology
|December 21, 2020
Summary
The novel sequentially optimized reconstruction strategy (SORS) provides visual field testing comparable to the dynamic strategy (DS) with up to a 70% reduction in testing time for glaucoma patients.
Area of Science:
- Ophthalmology
- Medical Technology
- Visual Field Testing
Background:
- Conventional perimetry tests can be time-consuming.
- A novel sequentially optimized reconstruction strategy (SORS) has been proposed to improve speed.
- SORS estimates untested visual field locations using linear approximation.
Purpose of the Study:
- To clinically validate the noninferiority of SORS compared to the dynamic strategy (DS).
- To assess the speed and accuracy of SORS in visual field testing.
Main Methods:
- A prospective clinical study included 83 subjects (32 healthy, 51 glaucoma patients).
- Visual field tests were performed using both DS and SORS on an Octopus 900.
- Sensitivity thresholds (ST) and mean defect values were analyzed and compared.
Main Results:
- High correlations were found between individual STs (r ≥ 0.74) and mean defect values (r ≥ 0.88) from SORS and DS.
- SORS achieved a 70% reduction in acquisition time with a mean absolute error under 3 dB.
- SORS accurately detected most defects but occasionally missed small, isolated ones.
Conclusions:
- SORS-acquired visual fields correlate well with DS-acquired fields in healthy and glaucoma patients.
- SORS offers a significant reduction in acquisition time.
- SORS demonstrates comparable utility to DS for clinical practice.
