Multifocal Eyewear Parameter Tuning in Virtual Vision Testing
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Solution Overview
Problem
Traditional methods for visual acuity assessment lack dynamic adjustment of test parameters, leading to less accurate assessments and are not suitable for home use with household devices, limiting accessibility and affordability of vision testing.
Innovation Solution
Implementing methods and systems using a head-mounted display (HMD) with processors and memory to create a 3D virtual environment, partition the field of view, render visual patterns, adjust vision correction filters based on user responses, and combine filters to determine eyewear prescriptions, enabling dynamic adjustments and home-based testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual acuity assessment methods are used, then the testing process is simple and accessible, but the assessment accuracy is insufficient and dynamic adjustment of test parameters is not possible
Solution Approach 1:
The patent creates a virtual copy of the physical vision testing environment using augmented reality overlays. Virtual visual patterns and test elements are projected onto the user's field of view, replicating traditional optometry testing without requiring physical test charts or complex optical equipment. This allows accurate vision assessment while maintaining simplicity and accessibility.
Solution Approach 2:
The system dynamically adjusts test parameters including visual pattern characteristics, overlay positions, and test conditions based on real-time user responses and eye tracking data. This enables adaptive vision testing that optimizes accuracy for each user while maintaining an accessible interface through automatic parameter modification.
2Adaptability or versatility
If traditional visual acuity assessment methods are used, then the equipment required is simple, but the testing cannot be implemented at home and accessibility is limited
Solution Approach 1:
The patent implements a universal vision testing system that functions across multiple environments (clinical and home settings) using a single augmented reality platform. The system adapts to different locations and devices, providing comprehensive vision assessment capabilities whether used in a professional optometry office or a home environment, thereby enhancing accessibility without proportionally increasing complexity.
Solution Approach 2:
The system enables users to perform vision self-assessment at home through automated guidance, eye tracking-based response detection, and self-calibration procedures. Users can complete vision testing independently without requiring a professional examiner present, making vision care accessible in home settings while the system automatically manages the complexity of test administration.
3Measurement precision
If traditional visual acuity assessment methods are used, then the testing process is straightforward, but dynamic adjustment of test parameters is not possible leading to less accurate assessments
Solution Approach 1:
The system continuously monitors user responses through eye tracking technology and automatically adjusts test parameters based on real-time feedback. Visual patterns, overlay positions, and test conditions are dynamically modified according to user performance, enabling high-precision vision assessment while the system handles the complexity of parameter adjustment automatically, maintaining ease of operation.
Data Source
AI summary
An eye exam can be performed using an electronic device in a virtual environment to determine multifocal parameters of a multifocal eyewear. The electronic device can execute a visual assessment application and obtain a multifocal eyewear prescription of a user associated with the electronic device. The multifocal eyewear prescription can include a multifocal parameter for a lens having a plurality of focal lengths. The electronic device can partition a field of view displayed on the user interface into a plurality of regions, display a visual stimulus successively in two distinct regions of the user interface, and obtain user response data captured by one or more sensors in response to the visual stimulus displayed in the two distinct regions. Based on the user response data, the electronic device can adjust the multifocal parameter of the multifocal eyewear prescription.