VR Visual Acuity Testing With Depth Variation and Eye Tracking
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Solution Overview
Problem
Traditional visual assessment methods are limited to professional settings and do not allow for dynamic adjustment of test parameters, making them less accurate and inaccessible for home use with household devices.
Innovation Solution
Implementing a virtual reality-based vision test using a head-mounted display and camera to generate a customizable 3D environment for evaluating visual acuity and perception, tracking eye movements and response times to visual stimuli, and analyzing user interactions to determine eye health conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional visual assessment methods are used, then standardized procedures and controlled clinical settings ensure accurate results, but the methods are limited to professional settings and cannot be implemented at home with household devices
Solution Approach 1:
The patent creates a virtual copy of the clinical vision testing environment using VR technology. The HMD displays a simulated optometrist office with virtual examination equipment, allowing users to perform vision tests at home without needing actual specialized medical devices. This virtual replica enables accurate vision assessment while eliminating the requirement for physical clinical equipment.
Solution Approach 2:
The patent replaces physical mechanical vision testing equipment with a digital VR system. Instead of using actual optometric instruments and physical examination tables, the system uses software-based virtual environments and head-mounted displays to conduct vision assessments, substituting mechanical systems with electronic and virtual alternatives.
2Measurement precision
If traditional visual assessment methods are used, then standardized procedures are followed, but dynamic adjustment of test parameters is not allowed leading to less accurate assessments
Solution Approach 1:
The patent implements dynamic adjustment of vision test parameters within the VR environment. The system can adaptively modify test conditions based on user performance, adjusting stimulus characteristics, difficulty levels, and testing parameters in real-time to optimize assessment accuracy for each individual user's vision profile.
Solution Approach 2:
The system enables continuous modification of test parameters such as lighting conditions, stimulus types, distances, and complexity levels. Users can dynamically change these parameters during the vision assessment to better suit their specific needs and vision conditions, enhancing both accuracy and adaptability of the evaluation.
3Reliability
If traditional visual assessment methods are used, then controlled clinical environment ensures reliable results, but the methods cannot be implemented in a consistent and environment-locked manner at home
Solution Approach 1:
The patent creates a digital twin of the controlled clinical environment, replicating the same standardized conditions that would exist in a physical optometrist office. The VR system maintains consistent lighting, positioning, and procedural protocols through software control, ensuring reliable and repeatable vision test results can be obtained in a home setting without compromising the controlled environment necessary for accuracy.
Data Source
AI summary
A virtual eye test for evaluating visual acuity can be conducted in a virtual reality (VR) environment. The test uses an electronic device with a head-mounted display (TIMID) and a camera. The device generates a VR user interface corresponding to a three-dimensional virtual environment and renders it on the HMD. A testing sequence with progressively finer details and varying depths is displayed in the VR interface. The device tracks eye movements and response times to visual stimuli presented in the sequence, using the camera. User responses are evaluated based on these measurements to test visual acuity.