Automated Visual Field Testing on Limited FOV Head-Mounted Devices
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Solution Overview
Problem
Current methods for testing peripheral and expanded visual fields are inefficient and require specialized technicians, lacking automation and effective methods for testing areas outside the standard field of view.
Innovation Solution
An automated method using a head-mounted device with virtual reality software that provides a virtual introduction and interactive tutorial, automatically moves a fixation point to different locations, and displays sequences of stimuli points for the patient to click on, allowing for peripheral and expanded visual field testing without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual testing methods are used for peripheral visual fields, then specialized technicians can perform detailed testing, but the process is inefficient and requires manual intervention
Solution Approach 1:
The system performs self-testing by automatically guiding patients through visual field testing without requiring specialized technicians. The computerized platform autonomously presents stimuli, tracks responses, and generates reports, enabling the system to serve itself and eliminating dependence on trained operators.
Solution Approach 2:
Manual mechanical testing procedures are replaced with a computerized digital system. The patent substitutes physical manual operations with software-based automation, using virtual reality technology and computer-controlled stimulus presentation to perform visual field testing automatically.
2Adaptability or versatility
If standard field of view devices are used, then testing is straightforward, but areas outside the standard field of view cannot be tested
Solution Approach 1:
The system dynamically adjusts the field of view and stimulus presentation based on testing requirements. It can expand or contract the tested visual field area, move fixation points to different locations, and adapt stimulus parameters in real-time, providing versatility while maintaining ease of operation through automated control.
Solution Approach 2:
The patent extends testing from the standard two-dimensional field of view to include expanded peripheral areas by utilizing virtual reality technology. This adds a dimensional aspect to visual field testing, allowing coverage of areas beyond the traditional display boundaries while keeping the interface simple for patients.
3Productivity
If automated testing is implemented, then efficiency improves and technician requirement decreases, but system complexity increases
Solution Approach 1:
The computerized platform performs multiple functions within a single system: stimulus presentation, response tracking, data analysis, and report generation. This multi-functionality increases productivity by consolidating testing operations while managing complexity through integrated software architecture that handles various testing protocols universally.
Data Source
AI summary
An automated method for testing peripheral and expanded visual fields on limited field of view head-mounted device. The method has a fixation point that is placed in multiple locations of the field of view to test stimuli points that would be outside of the field of view of a head-mounted device if the fixation point were in the center. Stimuli points are grouped together and are associated with fixation points. Each stimulus appears individually on an opposite side of the fixation point in the field of view. The stimuli points may be static or dynamic. The method is applied as visual field diagnostic tool for Ptosis disorder, Esterman test, or any expanded peripheral Visual Field test.