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[Shutter-glasses haploscope with eye-tracking control for fusion therapy]
Hans-Otto Carmesin1, Stefan Kallenberger, Constanze Schmidt
1Institut für Physik, Universität Bremen. Hans-Otto.Carmesin@t-online.de
Klinische Monatsblatter Fur Augenheilkunde
|October 9, 2003
Summary
This study introduces an automated haploscope using a monitor and eye-tracking for vision therapy. The device aids in diagnosing and treating strabismus and heterophoria, improving fusional ranges.
Area of Science:
- Ophthalmology and Vision Science
- Biomedical Engineering
- Computer Vision
Context:
- Conventional haploscopes necessitate manual adjustments and specialized images, limiting their use primarily to orthoptists.
- Existing methods for binocular vision assessment and training are often cumbersome and require specialized equipment.
- The need for accessible, adaptable, and automated vision diagnostic and therapeutic tools is significant.
Purpose:
- To develop an automated haploscope system utilizing a standard computer monitor and shutter-glasses controlled by an integrated eye-tracker.
- To enable real-time adjustment of visual disparity based on individual patient eye movements and strabismus measurements.
- To create a versatile platform for both diagnostic assessment and automated fusion training for various binocular vision disorders.
Summary:
- A novel haploscope system was developed, employing a computer monitor, shutter-glasses, and an eye-tracking system to automatically adjust visual disparity.
- The system determines fixation points and strabismus angles via eye-tracking software, dynamically regulating image disparity to match patient capabilities.
- Diagnostic data is continuously recorded, and the system allows for gradual reduction of disparity as the patient improves.
Impact:
- The developed shutter-glass haploscope with eye-tracking offers versatile diagnostic capabilities and automated, patient-specific fusion training.
- This technology facilitates vision therapy that can be conducted in diverse settings, including home or workplace environments.
- Initial patient trials show promising results, including reduced subjective strabismus angles and enhanced fusional ranges for conditions like heterophoria.