VR Stereo Vision Testing With Dynamic Depth Stimulus Adjustment
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Solution Overview
Problem
Traditional vision testing methods lack dynamic adjustment of test parameters and cannot be implemented in a home environment using household devices, leading to less accurate assessments.
Innovation Solution
Implementing methods and systems that utilize a head-mounted display (HMD) to create a 3D virtual environment for vision testing, dynamically adjusting visual stimuli based on user head orientation and obtaining eye response data to determine parameters such as astigmatism and depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vision testing 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 replaces traditional mechanical/optical vision testing equipment with a head-mounted display device that presents visual stimuli through a digital interface. The HMD uses electronic display technology to present visual acuity test patterns, replacing conventional chart-based or optical system approaches, thereby enabling dynamic parameter adjustment while maintaining portability.
Solution Approach 2:
The patent implements dynamic adjustment of test parameters including visual stimulus characteristics (size, contrast, duration), presentation timing, and test progression based on real-time user responses. The system dynamically adapts the difficulty and nature of visual stimuli during the assessment, moving from static traditional methods to a flexible, responsive testing protocol that optimizes measurement accuracy.
2Adaptability or versatility
If traditional vision testing methods are used, then the equipment required is simple and accessible, but the ability to perform comprehensive vision assessment at home is limited
Solution Approach 1:
The head-mounted display device performs multiple vision assessment functions including visual acuity testing, astigmatism detection, and depth perception evaluation within a single integrated system. The device can present various types of visual stimuli (letters, symbols, patterns) and adapt to different test protocols, making it a universal vision testing platform that replaces multiple specialized devices while enabling home-based comprehensive assessment.
Solution Approach 2:
The system enables users to perform vision assessments independently at home without requiring a clinician's direct involvement during the test. The HMD presents visual stimuli, captures user responses through the interface, and automatically processes results, allowing users to conduct their own vision screening while maintaining professional-grade assessment capabilities.
3Ease of operation
If traditional vision testing methods are used, then the testing environment requirements are minimal, but dynamic adjustment of test parameters during assessment is not possible
Solution Approach 1:
The patent implements dynamic modification of multiple test parameters during the vision assessment process. The system adjusts visual stimulus parameters (size, contrast, duration, orientation), presentation intervals, and test progression based on user responses and assessment needs. This enables flexible adaptation of the testing protocol without requiring physical reconfiguration of equipment, achieving ease of parameter adjustment through software-controlled digital displays.
Data Source
AI summary
A vision test can be performed for assessing eye depth perception in a virtual environment. An electronic device, such as a head-mounted display, can execute a visual assessment application, including generating a user interface corresponding to a three-dimensional virtual environment. The electronic device can identify a first line of sight of a user associated with the electronic device and select a plurality of positions on the first line of sight. For example, each position can be located in a respective position range. For each position, an object can be displayed at a plurality of locations within the respective position range. The electronic device can obtain a plurality of user responses to the displaying of the object for each position and determine a depth perception level of the user associated with the first line of sight based on the plurality of user responses.