Intraocular Pseudophakic Contact Lens With Capsular Fixation

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Solution Overview

Problem

Conventional methods for correcting residual refractive errors after intraocular lens implantation are invasive, risky, and unpredictable, often leading to surgical complications and visual aberrations.

Innovation Solution

An intraocular pseudophakic contact lens with haptics that secure to the anterior leaflet of the capsular wall, capturing and confining the lens to an existing intraocular lens, allowing for secure placement and easy replacement or removal, and utilizing intraoperative wavefront aberrometry for precise refractive correction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional methods (IOL replacement, ablation surgery, piggyback IOL, ICL insertion) are used to correct residual refractive error, then refractive correction is achieved, but surgical risk and invasiveness increase

Engineering Contradiction:

Improvesurgical safetyVSAvoidcorrection method availability

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The correction system is segmented into two independent components: the original intraocular lens (IOL) and the add-on pseudophakic contact lens (PCL). This allows the PCL to be implanted separately without removing or replacing the original IOL, reducing surgical risk while maintaining correction capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pseudophakic contact lens is nested over the existing intraocular lens, with the PCL's optical zone positioned anterior to the IOL's optical zone. This nested configuration enables both lenses to function simultaneously without interference, providing correction while minimizing surgical intervention

Inventive Principle:

Principle #7Nested doll (Nesting)

2Measurement precision

If conventional correction methods are used, then refractive error is corrected, but predictability of final refractive outcome decreases

Engineering Contradiction:

Improverefractive correction accuracyVSAvoidpredictability of outcome

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system incorporates intraoperative wavefront aberrometry that provides real-time feedback on the patient's refractive status during surgery. This allows the surgeon to measure residual aberrations and select or customize the PCL power accordingly, ensuring precise correction and predictable outcomes

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The PCL power and design parameters are optimized based on wavefront aberrometry measurements. By changing the optical parameters of the PCL according to measured aberrations, the system achieves precise refractive correction with high predictability

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If invasive procedures are used for correction, then refractive error can be addressed, but surgical complications and visual aberrations increase

Engineering Contradiction:

Improvecorrection capabilityVSAvoidsurgical complications

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The haptics of the PCL are pre-configured with capture features (ridges, lips, or barbs) that will engage with the capsular bag during implantation. This preliminary design allows the haptics to be easily captured and secured in the capsular bag without requiring complex surgical maneuvers, reducing surgical complexity and complication risk

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The capsular bag serves as an intermediary structure that secures the PCL haptics without requiring direct attachment to the IOL or cornea. The haptics are captured within the capsular bag, providing stable fixation while avoiding complications associated with more invasive attachment methods

Inventive Principle:

Principle #24Intermediary (Mediator)

4Reliability

If permanent correction devices are implanted, then refractive error is corrected, but ease of removal and reversal decreases

Engineering Contradiction:

Improvecorrection stabilityVSAvoidremoval and reversal ease

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The PCL system is designed to be dynamically adjustable rather than permanently fixed. The PCL can be removed or replaced by simply pulling on the haptics that extend through the cornea, allowing easy reversal or adjustment without complex surgical procedures while maintaining stable correction during use

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4076280B1Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system

Publication Date: 2025.10.29 ONPOINT VISION INC

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AI summary

An apparatus includes an intraocular pseudophakic contact lens having an optical lens and haptics extending radially from the optical lens and configured to be inserted under an anterior leaflet of a capsular wall in an eye in order to capture and confine the haptics under the anterior leaflet and secure the intraocular pseudophakic contact lens against an artificial intraocular lens in the eye. Anterior surfaces of the haptics are configured to contact an inner capsular wall surface at the anterior leaflet. Posterior surfaces of the haptics include ridges configured to capture at least one edge of the artificial intraocular lens in order to secure the intraocular pseudophakic contact lens to the artificial intraocular lens. Different portions of the optical lens provide different amounts of magnification such that a first portion of the optical lens provides a first amount of magnification and a second portion of the optical lens provides a second amount of magnification.