Peripheral Distortion Lens for Myopia and Hyperopia Control

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Solution Overview

Problem

Existing technologies fail to effectively control the progression of myopia and hyperopia, which are refractive errors caused by the axial length and crystalline lens strength imbalances in the eye, with increasing prevalence, especially among educated populations.

Innovation Solution

Lenses are designed with peripheral zones of varying thickness or refractive index to introduce pincushion or barrel distortion, combined with rotational stabilization and spherical aberration, to regulate light focus and reduce refractive errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional lenses are used to correct refractive error, then visual acuity is improved, but the progression of myopia and hyperopia cannot be controlled

Engineering Contradiction:

Improvecontrol of refractive error progressionVSAvoidvisual acuity correction effectiveness

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The lens is divided into multiple functional zones: a central zone for visual acuity correction and a peripheral zone with varying thickness for refractive error progression control. This segmentation allows simultaneous achievement of both visual correction and progression control functions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The peripheral zone incorporates local variations in thickness (thicker and thinner regions) to create specific optical effects at different locations. This local quality variation generates peripheral defocus and distortion that specifically target myopia or hyperopia progression while maintaining central visual quality.

Inventive Principle:

Principle #3Local quality

2Reliability

If peripheral distortion is introduced to control refractive error, then myopia and hyperopia progression is reduced, but optical aberration increases

Engineering Contradiction:

Improverefractive error controlVSAvoidoptical aberration

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The lens design applies different optical properties to different zones: the central zone provides standard optical correction while the peripheral zone introduces controlled distortion. By localizing the aberration-inducing features to the periphery, central visual quality remains high while peripheral refractive control is achieved.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Instead of attempting to eliminate peripheral distortion, the invention intentionally introduces controlled distortion in the peripheral zone to achieve refractive error control. This inverted approach accepts optical aberration as a functional feature rather than a defect to be removed.

Inventive Principle:

Principle #13The other way round (Inversion)

3Reliability

If varying thickness zones are added to the lens, then peripheral defocus is generated for refractive control, but lens complexity increases

Engineering Contradiction:

Improveperipheral defocus controlVSAvoidlens structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The lens is segmented into distinct functional zones (central and peripheral) with different thickness characteristics. This segmentation allows the complex peripheral defocus function to be achieved through simple zonal differentiation rather than complex surface profiling throughout the entire lens.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention applies varying thickness only to the peripheral zone rather than the entire lens. This partial application of the thickness variation achieves sufficient peripheral defocus for refractive control while avoiding the excessive complexity that would result from applying the same variation across the whole lens.

Inventive Principle:

Principle #16Partial or excessive action

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 effectively control the progression of myopia and hyperopia by altering light focus on the peripheral retina, reducing the incidence and severity of these refractive errors.

Implementation Method 1

a distance from the second zone of the peripheral zone to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient

Methodology Applied

Scientific EffectOptical distortion: Refraction

Implementation Method 2

the central zone includes a conic-section curve configured to generate a spherical aberration in the eye of the patient

Methodology Applied

Scientific EffectSpherical aberration: Refraction

Data Source

PatentUS12523890B2Systems, apparatus, and methods for regulating refractive error development through the modulation of peripheral distortion

Publication Date: 2026.01.13 SHENYANG KANGENDE MEDICAL SCI & TECH CO LTD

AI summary

In general, one aspect disclosed features a lens comprising: a central zone having an optical center corresponding to the visual axis of an eye of a patient; and a peripheral zone peripheral to the central zone and comprising: a first zone having a first thickness, and a second zone having a second thickness, wherein: the second thickness varies from the first thickness, and a distance from the second zone to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient.