Ophthalmic Lens Annular Sectors for Peripheral Myopia Control
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Solution Overview
Problem
Myopia, or nearsightedness, progresses during childhood and adulthood due to eye growth, increasing the risk of optical maladies such as cataracts and retinal detachment, and current laser refractive surgeries are often ineffective for high myopes.
Innovation Solution
Ophthalmic lenses with annular zones providing myopia-inhibiting wavefront corrections, including positive sphere corrections and subsurface refractive index variations, are designed to modify images on the peripheral retina, reducing the circumferential-to-radial aspect ratio of peripheral vision regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional laser refractive surgery is used for high myopes, then central vision correction is achieved, but the surgery is ineffective for high myopic patients
Solution Approach 1:
The patent applies different optical corrections to different regions of the retina: central vision correction for the fovea and myopia-inhibiting wavefront correction for the peripheral retina. This local differentiation allows the lens to simultaneously address central visual acuity and peripheral myopia progression, making the treatment effective for high myopes who previously responded poorly to traditional surgery.
2Stability of the object's composition
If the eye grows during childhood development, then normal visual development occurs, but myopia progression increases
Solution Approach 1:
The patent applies preliminary anti-action by using optical cues in the peripheral retina to counteract the eye's natural growth tendency. The myopia-inhibiting wavefront correction creates optical signals that preemptively signal the eye to reduce axial elongation, thereby controlling myopia progression while allowing necessary developmental growth.
3Area of stationary object
If peripheral retinal images have high circumferential-to-radial aspect ratio, then peripheral vision coverage is improved, but myopia progression is stimulated
Solution Approach 1:
The patent intentionally creates asymmetric image projections on the peripheral retina by reducing the circumferential-to-radial aspect ratio. This asymmetric correction pattern differs from traditional symmetric corrections and specifically targets the optical signals that drive myopia progression, allowing peripheral vision coverage while inhibiting myopia.
4Reliability
If annular zones with wavefront correction are added to the lens, then myopia inhibition is achieved, but lens complexity increases
Solution Approach 1:
The patent segments the lens into distinct functional zones: a central zone for visual acuity correction and annular zones for myopia-inhibiting wavefront correction. This segmentation allows each zone to perform its specific function independently, achieving myopia inhibition while maintaining a manageable lens structure through functional分区.
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
These lenses effectively inhibit myopia progression by modifying peripheral retinal images, potentially reducing the risk of associated optical maladies and improving visual acuity.
Implementation Method 1
an ophthalmic lens includes an annular zone configured to provide a myopia mitigating wavefront correction to light incident on the peripheral retina
Implementation Method 2
light from the first peripheral vision region passes through the first annular sector to form an image of the first peripheral vision region on a first annular region of the peripheral retina
Implementation Method 3
subsurface refractive index variations
Data Source
AI summary
Ophthalmic lenses include one or more annular sectors configured to provide one or more off-axis corrections to light incident on the peripheral retina to inhibit myopia progression. An ophthalmic lens includes a central zone and an annular zone that includes an annular sector configured to provide a myopia inhibiting wavefront correction to light from a peripheral vision region of a peripheral visual field of the use. The first annular sector is configured so that light from the peripheral vision region passes through the first annular sector to form an image of the peripheral vision region on an annular region of the peripheral retina. The myopia inhibiting wavefront correction reduces a circumferential-to-radial aspect ratio of the image of the first peripheral vision region.