Aspheric Accommodating Intraocular Lenses for Stable Optical Quality

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing accommodating intraocular lenses face challenges in maintaining optical quality throughout accommodation and disaccommodation, often leading to issues like astigmatism due to inadequate design of fluid channels.

Innovation Solution

The intraocular lens design features an aspheric optic with anterior and posterior elements that maintain thickness gradients and include dual fluid channels in the posterior element, ensuring predictable deformation and reduced astigmatism through increased stiffness and controlled fluid flow between the optic and haptic chambers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the optic uses a spherical design, then manufacturing is simpler, but optical quality deteriorates due to astigmatism during accommodation

Engineering Contradiction:

Improveoptic manufacturing simplicityVSAvoidoptical quality consistency

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent applies aspheric curvature to the optic surfaces, specifically designing the anterior and posterior surfaces with different curvatures that change during accommodation. This allows the lens to maintain optimal optical quality across different powers while still being manufacturable using standard techniques, resolving the contradiction between manufacturing simplicity and optical quality consistency.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Adaptability or versatility

If the optic elements are made thinner, then the lens is more flexible for accommodation, but structural stability deteriorates

Engineering Contradiction:

Improvelens flexibilityVSAvoidoptic structural stability

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The patent implements varying thickness distributions across different regions of the optic elements. The central optical zones are thinner to allow flexibility and power change, while the peripheral regions maintain greater thickness for structural stability. This local differentiation of thickness allows the lens to achieve both flexibility for accommodation and structural integrity.

Inventive Principle:

Principle #3Local quality

3Quantity of substance

If fluid channels are made larger, then fluid flow is improved, but manufacturing precision deteriorates due to alignment difficulties

Engineering Contradiction:

Improvefluid flow capacityVSAvoidchannel alignment accuracy

Core Design Contradiction:

Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent integrates the fluid channels directly into the haptic structure, making the channels an inherent part of the haptic rather than separate components. This merging of functions allows the channels to be formed simultaneously with the haptic in a single manufacturing process, eliminating alignment issues while maintaining adequate fluid flow capacity through the haptic structure.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12447006B2Accommodating intraocular lenses

Publication Date: 2025.10.21 ALCON INC

AI summary

Accommodating intraocular lenses including an optic having an anterior element and a posterior element defining an optic fluid chamber, wherein the optic is aspheric across all powers throughout accommodation or disaccommodation. Intraocular lenses, optionally accommodating, where an optic portion is centered with a midline of a height of the peripheral portion, the height measured in the anterior to posterior direction.