3D Multifocal Eyewear Fitting With Dynamic Vision Filters
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Solution Overview
Problem
Traditional methods for visual acuity assessment lack dynamic adjustment of test parameters and cannot be implemented for home use with household devices, leading to less accurate assessments.
Innovation Solution
Implementing a method using a head-mounted display (HMD) with processors and memory to execute a visual assessment application, partitioning the field of view into regions, rendering visual patterns, adjusting vision correction filters based on user responses, and combining filters to determine eyewear prescriptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual acuity assessment methods are used, then the assessment can be performed with simple equipment, but the measurement precision and accuracy are insufficient
Solution Approach 1:
The patent creates a virtual copy of the physical vision testing environment using augmented reality. Virtual visual acuity charts and testing elements are overlaid onto the real-world view through AR lenses, allowing traditional vision testing to be replicated in a virtual space. This enables access to sophisticated testing capabilities without requiring complex physical testing equipment in the real world.
Solution Approach 2:
The patent transitions from traditional 2D visual acuity charts to a 3D spatial testing environment. Visual patterns are rendered at different depths and positions in the virtual space, allowing assessment of vision across multiple focal distances and spatial locations simultaneously. This dimensional enhancement provides more comprehensive vision data without proportionally increasing physical equipment complexity.
2Ease of operation
If traditional visual acuity assessment methods are used, then the testing can be performed in clinical settings, but accessibility and convenience for home use are limited
Solution Approach 1:
The AR-based vision testing system serves multiple functions: it can perform visual acuity testing, refractive error assessment, and various other vision examinations using the same platform. The system works across different environments (home, clinic, outdoor) and can adapt to different user needs, making professional-grade vision testing universally accessible without requiring location-specific equipment.
Solution Approach 2:
The patent enables users to perform their own vision assessments at home without requiring a clinician to be physically present. The AR system guides users through the testing process, automatically captures responses through eye tracking and gaze detection, and generates preliminary assessment results. This self-service capability dramatically improves accessibility while maintaining measurement precision through automated data collection and analysis algorithms.
3Measurement precision
If static test parameters are used in visual assessment, then the testing procedure is simple, but the assessment accuracy is reduced
Solution Approach 1:
The patent implements dynamic test parameters that automatically adjust during the vision assessment process. Based on real-time user responses, eye tracking data, and gaze patterns, the system modifies visual stimulus characteristics such as size, contrast, duration, and positioning. This dynamic adaptation optimizes measurement precision for each individual user while the automated control algorithms prevent the user from experiencing the complexity of manual parameter adjustment.
Solution Approach 2:
The system continuously monitors user responses through eye tracking, gaze detection, and interaction patterns, then uses this feedback to adjust subsequent test parameters. This closed-loop feedback mechanism ensures that each visual stimulus is optimized based on previous performance data, progressively refining the assessment accuracy without requiring the user to understand or control the parameter adjustments.
Data Source
AI summary
A multifocal eyewear fitting procedure can be performed using an electronic device in a virtual environment. The electronic device can execute a visual assessment application and display a user interface to create a 3D virtual environment. A comprehensive prescription for an eyewear can have a plurality of lens portions, and each lens portion may correspond to a distinct region of a field of view and have a respective prescription parameter. The electronic device can generate a bifocal filter, a trifocal filter, and/or a progressive filter based on the comprehensive prescription. The electronic device can obtain 3D visual content for display on the user interface and render a plurality of versions of the first 3D visual content based on the bifocal filter, the trifocal filter, and/or the progressive filter.