Gaze Stability Assessment via Head-Mounted Tracking
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Solution Overview
Problem
Current manual tests for diagnosing vestibular disorders and gaze acuity are inaccurate and inefficient, particularly in assessing gaze stability during head rotation at a constant speed, which is crucial for diagnosing balance and vestibular disorders.
Innovation Solution
A system and method using a head-mounted device with a display and data processing unit to track head movement and measure static and dynamic visual acuity, comparing these values to determine gaze stability, allowing for automatic or manual assessment of visual acuity during various head movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual testing methods are used to assess gaze stability, then the testing process is simple to perform, but the measurement precision and diagnostic accuracy are insufficient
Solution Approach 1:
The patent replaces manual mechanical testing with an automated computer-based system that uses video recording and image processing to measure gaze stability. The system automatically tracks eye movements and head movements through software algorithms, eliminating the need for manual observation and measurement while significantly improving measurement precision.
Solution Approach 2:
The patent introduces a computer as an intermediary device that mediates between the patient's physical movements and the diagnostic assessment. The computer captures video signals, processes head and eye movement data, and generates quantitative gaze stability measurements, serving as a bridge between the physical testing environment and diagnostic interpretation.
2Measurement precision
If automated head-mounted devices are used to track head movement, then the measurement precision of gaze stability improves, but the device complexity and ease of operation worsen
Solution Approach 1:
The patent makes the head-mounted device universal by integrating multiple functions into a single apparatus: it tracks both head movements and eye movements simultaneously, records video signals, and provides real-time feedback. This multi-functional design eliminates the need for separate devices for each measurement, simplifying the overall testing procedure despite the increased capability of individual components.
Solution Approach 2:
The system incorporates real-time feedback mechanisms where the computer provides immediate information about head and eye movement deviations. This feedback loop allows operators to adjust and maintain proper positioning during testing, making the complex measurements more manageable and easier to perform correctly.
3Reliability
If manual recording of visual acuity during head rotation is performed, then the device complexity is low, but the reliability and consistency of test values deteriorate
Solution Approach 1:
The patent replaces manual recording processes with automated computer-based data capture and analysis. The system automatically records head rotation speed, eye movement trajectories, and visual acuity measurements, eliminating human error and variability in data collection and ensuring consistent, reliable test values across different patients and testing sessions.
Solution Approach 2:
The system maintains continuous recording of all test parameters throughout the head rotation process, rather than relying on discrete manual observations. This continuous data capture ensures that no information is lost and provides a complete, consistent record of gaze stability performance throughout the entire testing sequence.
Data Source
AI summary
Disclosed is an apparatus and method for identifying the gaze stability of a patient. The apparatus includes a head mounted device configured to a patient head, wherein the head mounted device is adapted to track the movement of the patient head. Further, the apparatus includes a display adapted to display a graphic pattern, a perception module adapted to receive perception information regarding the patient's call out of the graphic and a data processing device adapted to control and execute the function of the display, the head mounted device, the perception module based on the inputs received from the perception module.