VR Vision Test Controller Actuation for Dynamic Visual Assessment
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Solution Overview
Problem
Traditional vision testing methods lack dynamic adjustment of test parameters and cannot be implemented for home use with household devices, leading to less accurate assessments.
Innovation Solution
Implementing methods and systems that utilize a head-mounted display (HMD) with processors and memory to create a 3D virtual environment for vision testing, including dynamic adjustment of test parameters and integration with controller actuation and eye-tracking technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vision testing methods are used, then the testing can be performed with simple equipment, but the assessment accuracy is reduced and dynamic adjustment of test parameters is not possible
Solution Approach 1:
The patent creates a virtual copy of the vision testing environment using 3D graphics and virtual reality technology. Instead of using physical charts and traditional equipment, the system renders virtual vision test content (such as virtual E-letters, optotypes, and visual acuity charts) that can be displayed on standard electronic screens, thereby maintaining simplicity while enabling dynamic parameter adjustment and accurate measurement.
Solution Approach 2:
The system implements dynamic adjustment of test parameters by allowing real-time modification of visual stimulus properties (size, position, contrast, duration) and test conditions (distance, lighting, duration) through software control. This enables the testing system to adapt to different user needs and clinical requirements without changing physical equipment.
2Adaptability or versatility
If traditional vision testing methods are used, then the equipment is simple and accessible, but the testing cannot be performed in a controlled environment at home
Solution Approach 1:
The patent designs a vision testing system that can function in multiple environments (clinical and home settings) using a single platform. The system runs on common electronic devices (smartphones, tablets, computers, VR headsets) and provides standardized testing protocols that work universally across different locations, eliminating the need for specialized clinical equipment while maintaining reliability through software-based environmental control.
Solution Approach 2:
The system incorporates real-time feedback mechanisms including eye-tracking technology that monitors user gaze, fixation stability, and visual attention. This feedback allows the system to automatically adjust test parameters, verify proper viewing conditions, and ensure reliable measurements even when performed in uncontrolled home environments without professional supervision.
3Measurement precision
If traditional vision testing methods are used, then the testing process is simple, but dynamic adjustment of test parameters is not possible leading to less accurate assessments
Solution Approach 1:
The vision testing system performs self-calibration and automatic parameter adjustment based on user responses and eye-tracking data. The system autonomously determines optimal stimulus parameters, adjusts test difficulty levels, and adapts testing protocols without requiring manual intervention from operators, thereby maintaining ease of operation while achieving high measurement precision through dynamic parameter control.
Data Source
AI summary
A vision test can be aided with controller actuation in a virtual environment. An electronic device, such as a head-mounted display, can establish a communication link between the electronic device and a controller held by a user associated with the electronic device. A user application can be executed to enable the vision test. The electronic device can display a VR user interface based on a driver license issuing requirement to create a 3D virtual environment, and the VR user interface can include a moving traffic scene on which one or more visual stimuli are displayed. The electronic device can drive one or more actuators of a controller in synchronization with displaying the VR user interface.