Scattering Ophthalmic Lenses for Clear Vision and Myopia Control
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Solution Overview
Problem
Myopia progression is not effectively mitigated by existing therapeutic devices, which often compromise clear vision or are conspicuous, leading to inconsistent use.
Innovation Solution
Ophthalmic lenses with a clear aperture and surrounding scattering regions featuring irregularly spaced and sized scattering centers that reduce peripheral image contrast, allowing for clear on-axis vision while minimizing eye lengthening signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scattering centers are applied to reduce peripheral image contrast for myopia control, then myopia progression is mitigated, but on-axis vision clarity may be compromised
Solution Approach 1:
The lens is segmented into distinct functional zones: a central clear aperture for on-axis vision and surrounding annular scattering regions for peripheral vision control. This segmentation allows each zone to perform its specific function independently, maintaining clear on-axis vision while providing myopia control through peripheral scattering
Solution Approach 2:
Different regions of the lens are given different optical properties: the central aperture region has high optical quality for clear vision, while the peripheral annular regions have scattering properties for myopia control. This local differentiation of quality allows simultaneous optimization of both vision clarity and myopia progression mitigation
2Reliability
If existing therapeutic devices are used for myopia control, then eye lengthening signals are reduced, but clear vision is compromised or devices are conspicuous
Solution Approach 1:
The lens applies different optical qualities to different regions: the central clear aperture provides excellent vision for on-axis objects, while the peripheral scattering regions provide subtle contrast reduction for off-axis objects. This local differentiation maintains ease of operation by preserving clear vision where needed
Solution Approach 2:
The scattering centers are designed to be sufficiently small and densely spaced that they create a subtle diffusing effect rather than obvious discrete dots. This allows the therapeutic function to be achieved while the lens remains visually inconspicuous and aesthetically pleasing
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 lenses provide effective myopia progression control without significantly impairing on-axis vision, are inconspicuous, and can be used continuously, offering therapeutic benefits to both eyes with a single pair.
Implementation Method 1
a scattering region surrounding a clear aperture, wherein the scattering region has a plurality of spaced apart scattering centers sized and shaped to scatter incident light
Data Source
AI summary
An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.