Anti-myopia Spectacles with Micro-reticles and Micro-lenses
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Solution Overview
Problem
Current anti-myopia progression spectacles, such as MyoVision, Myopilux, and MyoSmart, have limited efficacy in controlling myopia progression in children, as they do not consistently reduce accommodation demand and ensure paracentral and peripheral retinal images are within focus or myopically defocused, leading to insufficient myopia control.
Innovation Solution
The design of spectacles with micro-reticles and corresponding micro-lenses distributed around the paracentral and peripheral regions, where micro-lenses refract light to form sharply focused or myopically defocused images on the retina, ensuring dominating retinal images that reduce eye elongation and myopia progression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional anti-myopia spectacles (MyoVision, Myopilux, MyoSmart) are used, then some myopia control effect is achieved, but the efficacy is limited and inconsistent in reducing accommodation demand and ensuring paracentral/peripheral retinal images are within focus or myopically defocused
Solution Approach 1:
The spectacle lens is divided into multiple functional zones: central vision zone, paracentral zone, and peripheral zone. Each zone contains micro-reticles with specific patterns (e.g., concentric rings, radial lines, circumferential lines) that are optically processed to create different retinal image characteristics. This segmentation allows independent optimization of each zone's optical effect to ensure consistent myopia control across different viewing conditions.
Solution Approach 2:
Different regions of the spectacle lens are assigned different optical properties and micro-reticle patterns. The paracentral and peripheral zones use specific micro-patterns that create myopically defocused images on the retinal periphery, while the central zone maintains appropriate focus characteristics. This local differentiation ensures that each retinal region receives the appropriate optical stimulus for myopia control.
2Manufacturing precision
If micro-reticles and micro-lenses are added to spectacle lenses, then retinal image focus control is improved, but device complexity increases
Solution Approach 1:
Micro-reticles with intricate patterns (concentric rings, radial lines, circumferential lines) are integrated directly into the spectacle lens substrate. Corresponding micro-lenses are then positioned over these micro-reticles. This nested structure allows complex optical functions to be achieved through hierarchical integration rather than separate components, managing complexity through organized layering.
Solution Approach 2:
The micro-reticle patterns are optically copied and transformed by the micro-lenses into corresponding retinal images. The micro-lenses act as optical copies that translate the micro-reticle patterns into focused or defocused images at the retinal plane, enabling precise control of image focus without requiring complex mechanical adjustment mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The spectacles effectively reduce myopia progression by consistently providing retinal images that are within focus or myopically defocused, enhancing clinical efficacy in controlling myopia progression in children.
Implementation Method 1
micro-lenses distributed around the paracentral and peripheral regions with each micro-lens arranged in between its corresponding micro-reticle and the pupil of a wearer's eye. The micro-lens refracts the light rays from the micro-reticle such that when the micro-reticle is presented to the wearer's eye
Data Source
AI summary
Spectacles that control myopia progression have a central zone that achieves foveal vision correction and distributed micro-reticle(s) and corresponding micro-lens(es) around the paracentral and/or peripheral zone of the spectacle. Each micro-lens is disposed between its corresponding micro-reticle and the pupil of a wearer's eye. The micro-reticle(s) and micro-len(s) are integrated with the structure of the spectacle to partially block some of the paracentral and/or peripheral objects from surrounding optical environment. The rest of the paracentral and/or peripheral retinal areas are still available for a wearer's eye to sense the presence and movement of surrounding objects.