Multitask Vision Architecture for Refractive Corrections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wavefront-guided vision correction technologies face challenges in designing and evaluating refractive corrections that balance image quality with focus depth and prevent vision symptoms like glare, halo, and starburst, while conventional visual acuity measures are insufficient for comprehensive vision assessment.
Innovation Solution
A multitask vision architecture based on wave aberration metrics that includes vision clarity, aberration-induced vision symptoms, and retinal image quality for various focus depths, enabling optimized wavefront corrections and comprehensive specification of vision products beyond conventional visual acuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wavefront-guided vision correction is used to improve image quality, then vision clarity is improved, but focus depth is reduced
Solution Approach 1:
The patent changes the wavefront parameters by introducing specific high-order aberrations (such as spherical aberration) into the optical system to extend focus depth. Instead of simply eliminating all aberrations, the system optimizes the wavefront parameters to achieve a balance between image quality and depth of focus, allowing the optical system to maintain acceptable vision quality across a range of distances.
2Adaptability or versatility
If high-order aberrations are introduced to increase focus depth, then presbyopic correction is achieved, but image quality is reduced
Solution Approach 1:
The patent applies local quality by introducing high-order aberrations selectively in specific regions of the pupil or at specific spatial frequencies, rather than uniformly across the entire optical system. This allows the system to extend focus depth in certain visual conditions while maintaining acceptable image quality in others, creating a localized optimization strategy.
3Device complexity
If conventional visual acuity measures are used for vision assessment, then simplicity is maintained, but comprehensive vision quality evaluation is insufficient
Solution Approach 1:
The patent creates a multi-functional vision assessment system that simultaneously evaluates multiple aspects of vision quality including visual acuity, contrast sensitivity, aberration-induced symptoms, and focus depth. This universal assessment platform integrates conventional and advanced metrics into a single comprehensive system, eliminating the need for separate specialized tests.
4Measurement precision
If aberration-free optics are created, then vision clarity at best focus is maximized, but sensitivity to focus offset increases
Solution Approach 1:
The patent applies beforehand cushioning by intentionally introducing controlled amounts of high-order aberrations as a protective measure against focus offsets. These pre-introduced aberrations act as a buffer that reduces the impact of small focus errors, preventing the extreme sensitivity that would otherwise occur in an aberration-free system. This proactive approach cushions the system against future focus variations.
Data Source
AI summary
A multitask vision architecture is constructed based on multitask vision-metrics derived from wave aberration of the eye. The multitask vision metrics include at least one of the followings: vision clarity of eye that measures optical quality of an eye against those in a cohort of eyes with normal acuity, aberration-induced vision symptoms, retinal image quality for best vision and night vision, and retinal image quality for a range of focus depth. The multitask vision architectures is applied for determining a wavefront shape for an optimized vision correction, for specifying excessive aberrations in an eye, and for specifying quality of a vision product.