Adaptive VR Eye Test Sequencing for Home Vision Assessment
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Solution Overview
Problem
Traditional vision tests lack the ability to dynamically adjust test parameters and are not suitable for home use with household devices, leading to less accurate assessments.
Innovation Solution
Implementing virtual vision tests using head-mounted displays (HMDs) with cameras and electrodes, or wireless communication links, to capture eye images and biometric data, and dynamically adjust test sequences based on user responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vision test methods are used, then the testing process is simple and can be performed with basic equipment, but the assessment accuracy is reduced and dynamic adjustment of test parameters is not possible
Solution Approach 1:
The patent implements dynamic adjustment of test parameters including visual stimulus characteristics (size, contrast, duration) and test sequence configuration based on real-time user responses. The system transitions from static traditional tests to adaptive virtual tests that modify parameters during execution to optimize assessment accuracy for each user's visual capabilities.
Solution Approach 2:
The system captures user responses through eye tracking data, electrode signals, and biometric sensors, then uses this feedback to dynamically adjust subsequent test parameters. The feedback loop enables real-time optimization of test difficulty and stimulus presentation based on measured user performance and physiological responses.
2Adaptability or versatility
If traditional vision tests are implemented, then the testing equipment is simple and accessible, but the tests cannot be performed at home with household devices
Solution Approach 1:
The patent adapts vision testing functionality to work with consumer head-mounted displays and smartphones that are already prevalent in households. The system uses multi-functional devices for both entertainment/display purposes and medical assessment, eliminating the need for specialized dedicated testing equipment while maintaining clinical-grade assessment capabilities.
Solution Approach 2:
The patent employs software intermediaries and processing algorithms that bridge the gap between consumer-grade hardware capabilities and clinical assessment requirements. The intermediary layer processes raw sensor data from household devices and transforms it into clinically relevant vision metrics, enabling home-based testing without requiring specialized medical equipment.
3Adaptability or versatility
If traditional vision tests are used, then the test sequence is fixed and simple to administer, but dynamic adjustment based on user responses is not possible
Solution Approach 1:
The test sequence transitions from a fixed predetermined series to a dynamic adaptive sequence that automatically adjusts based on user performance. Visual stimulus parameters such as size, contrast, and presentation duration are modified in real-time based on user responses, allowing the system to optimize each subsequent test item according to measured visual capabilities.
Solution Approach 2:
The system automatically adjusts test parameters and determines test sequence progression without requiring administrator intervention. The adaptive algorithm independently analyzes user responses and modifies subsequent test conditions, enabling unattended or minimally attended testing while maintaining optimized assessment protocols.
Data Source
AI summary
A vision test can be implemented in a virtual reality (VR) environment using a computer device that includes a head-mounted display (HMD). The computer device can obtain historical vision data of a patient user. Based on the historical vision data, the computer device determines an ordered sequence of vision tests including a first vision test for the patient user. The first vision test is followed by a set of one or more subsequent vision tests of the ordered sequence of vision tests. The computer device executes a user application configured to enable the ordered sequence of vision tests by rendering a user interface on the display. A first visual stimulus of the first vision test is displayed on the user interface. The computer device obtains a user response to the first visual stimulus, and dynamically adjusts one or more subsequent visual stimuli based on the user response.