Custom Ophthalmic Lens Design via Aberration Simulation
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Solution Overview
Problem
Current ophthalmic optics lack the capability to effectively correct higher order ocular aberrations, which significantly impact visual performance, especially in eyes with elevated defects due to disease or surgical intervention, and do not utilize an intelligent design philosophy to minimize these aberrations.
Innovation Solution
A closed-loop algorithm that identifies a minimal subset of optical aberrations through image simulation and predictive metrics, integrates these aberrations to design a custom optical lens surface that maximizes visual performance, and implements this surface onto a stabilized lens, allowing for the correction of optical defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If standard ophthalmic optics are used to correct optical defects, then basic visual performance is maintained, but higher order ocular aberrations remain uncorrected and visual performance is not optimized
Solution Approach 1:
The patent applies local quality by customizing the optical lens surface with zone-specific aberration corrections tailored to each patient's unique eye defects. Different zones of the lens address different aberrations (e.g., central zone for spherical aberration, peripheral zones for coma and astigmatism), allowing precise correction of higher order aberrations while maintaining overall visual performance.
Solution Approach 2:
The patent utilizes parameter changes by adjusting multiple lens parameters including base curve, diameter, thickness profile, and refractive index distribution to optimize the correction of higher order aberrations. The system varies these parameters to create customized lens designs that address individual patient needs while maintaining manufacturability.
2Reliability
If a closed-loop algorithm is used to identify and correct aberrations, then visual performance is maximized, but the manufacturing process becomes more complex
Solution Approach 1:
The patent implements feedback through a closed-loop algorithm that iteratively refines the lens design by comparing simulated visual performance with target outcomes. The system uses predictive metrics to evaluate aberration correction effectiveness and adjusts the lens parameters accordingly, ensuring optimal visual performance while providing a systematic approach to manage complexity.
Solution Approach 2:
The patent applies preliminary action by performing image simulation and predictive metrics analysis before finalizing the lens design. This preliminary computational work identifies the minimal subset of aberrations to correct and determines optimal lens parameters in advance, streamlining the actual manufacturing process and reducing on-site complexity.
3Ease of manufacture
If a minimal subset of aberrations is corrected, then the lens design is simplified and manufacturing is easier, but visual performance may not be fully optimized
Solution Approach 1:
The patent applies partial action by identifying and correcting only the minimal subset of aberrations that provide the greatest visual performance benefit for each patient. Rather than attempting to correct all possible aberrations, the system selectively addresses the most impactful ones based on individual eye characteristics, simplifying the lens design while maintaining optimal visual outcomes.
Solution Approach 2:
The patent replaces complex mechanical trial-and-error lens design with computational optics and image simulation. By using software-based predictive metrics and virtual modeling, the system determines the optimal aberration correction subset before manufacturing, eliminating the need for extensive physical prototyping and simplifying the manufacturing process while ensuring precision.
4Manufacturing precision
If custom optical surfaces are constructed onto stabilized lenses, then visual performance is improved, but the lens stabilization may be compromised
Solution Approach 1:
The patent applies segmentation by dividing the lens into distinct functional zones with different optical corrections. The base lens maintains stabilization properties while separate optical zones address specific aberrations. This segmentation allows the lens to simultaneously achieve stability and precision by assigning different functions to different regions without compromising either aspect.
Data Source
AI summary
Provided herein are methods of manufacturing an optical lens using image simulation and/or predictive metrics to determine optical aberrations and an iterative algorithm to correct the aberrations to create a custom-designed surface for the optical lens and to implement the manufacture of the custom-designed surface onto the lens. Also, a computer program product storing the method is provided. In addition, there are provided a customized optical lens designed by the method and a method of correcting optical aberration to improve visual using the customized optical lens. Further provided is a method of manufacturing a custom lens effective to mimic a subset of optical aberrations.