Virtual Environment for Personalized Ophthalmic Lens Calibration
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Solution Overview
Problem
The existing methods for determining the personalized optical features of corrective ophthalmic lenses are skewed due to uncontrolled lighting, gaze direction, and object proximity in traditional refraction rooms, leading to inaccurate adjustments and validations.
Innovation Solution
A method using a virtual environment within an eyewear system to immerse the individual in realistic conditions, allowing for natural postures and behaviors during visual tasks, and calculating a personalized optical feature value based on initial and adjustment values determined through subjective and objective assessments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the validation phase is performed in a traditional refraction room with limited space and uncontrolled illumination, then the space requirements are minimal and the setup is simple, but the test conditions skew the individual's experience and lead to inaccurate correction validation
Solution Approach 1:
The patent creates a virtual copy of real-world environments (outdoor scenes, driving scenarios, etc.) that can be displayed through the eyewear device. This virtual environment copying allows accurate validation of optical corrections without requiring physical replication of complex real-world settings, thus improving measurement precision while avoiding excessive device complexity
Solution Approach 2:
The patent introduces a computational intermediary layer that processes visual tasks and environmental conditions through software algorithms. This computational mediator translates simple physical setups into complex virtual testing scenarios, enabling accurate correction validation without requiring physically complex testing environments
2Measurement precision
If the individual performs visual tasks in a refraction room under supervision, then the testing process is controlled and standardized, but the individual adopts non-natural postures and experiences stress that skews the validation results
Solution Approach 1:
The patent enables dynamic testing where the individual can move freely and adopt natural postures while performing visual tasks in the virtual environment. The system dynamically adapts to the individual's natural behavior rather than requiring static, standardized positions, thus improving both measurement precision and ease of operation
Solution Approach 2:
The patent allows the individual to self-validate the correction by performing familiar real-life activities in the virtual environment without continuous professional supervision. This self-service approach reduces stress and encourages natural posture while maintaining standardized validation through automated task assessment
3Measurement precision
If the virtual environment is used to reproduce real-life conditions with controlled light and unlimited visual tasks, then the validation accuracy is improved and natural postures are encouraged, but the device complexity and computational requirements increase
Solution Approach 1:
The patent designs the eyewear device with multi-functionality, combining optical correction, virtual environment display, and visual task execution in a single universal platform. This allows the system to perform multiple validation functions without proportionally increasing device complexity, as the same hardware serves multiple purposes
Solution Approach 2:
The patent utilizes parameter changes in the virtual environment (lighting conditions, object distances, gaze directions) that can be controlled through software without physical hardware changes. This allows comprehensive validation testing while keeping the physical device complexity manageable
Data Source
AI summary
A system for determining a personalized value of an optical feature of a corrective ophthalmic lens which is intended to be worn in front of an eye of an individual for correcting his vision, the system including: a trial optical corrective device adapted to be place in front of an eye of an individual, the trial optical corrective device providing a correction to an individual complying with an initial value of an optical feature; an eyewear adapted to be placed in front of the trial optical corrective device worn by the individual and adapted to immerse the individual in a virtual environment, the eyewear being designed to present, in the virtual environment, a visual task to the individual adapted to determine an adjustment value; a processing unit programmed calculate a personalized value of the optical feature based at least on the initial value and the adjustment value.