Pinhole Intraocular Onlay With Footplates for Presbyopia Correction
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Solution Overview
Problem
There are no FDA-approved, non-sulcus, permanent surgical options for pseudophakic patients to improve near vision without compromising distance vision, and existing intraocular lenses (IOLs) often decenter, leading to issues like glaucoma, endothelial loss, and inter-lenticular membranes.
Innovation Solution
A pinhole intraocular onlay with flexible footplates is placed on top of an existing IOL within the capsular bag, utilizing a pinhole effect for presbyopia correction, minimizing contact with the existing IOL to prevent inter-lenticular membranes and allowing for precise alignment on the visual axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pinhole intraocular onlay is placed on top of an existing IOL to correct pseudophakic presbyopia, then near vision is improved, but device complexity increases
Solution Approach 1:
The pinhole onlay is nested within the capsular bag and positioned on top of the existing IOL, creating a layered configuration where the new device integrates with the existing implant without requiring removal or replacement
Solution Approach 2:
The onlay is divided into distinct functional segments: feet for positioning and anchoring, an optic portion for light transmission, and an annular mask with a pinhole aperture for presbyopia correction, allowing each component to perform its specific function
2Ease of operation
If an onlay with feet is used to position within the capsular bag, then ease of operation is improved, but object-generated harmful factors increase due to potential complications
Solution Approach 1:
The feet act as intermediary elements that bridge the onlay and the existing IOL, providing mechanical support and positioning while minimizing direct contact between the onlay optic portion and the IOL surface, thereby reducing the risk of membrane formation
Solution Approach 2:
The design preemptively addresses potential complications by structuring the onlay to rest on the IOL surface without creating pressure points or interfaces that would promote membrane formation or glaucomatous changes
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 pinhole intraocular onlay effectively corrects presbyopia by aligning on the visual axis without decentering the existing IOL, reducing the risk of complications like glaucoma and membranes, while providing biometric data transmission and augmented reality capabilities.
Implementation Method 1
utilizing a pinhole effect to improve near vision without affecting distance vision
Data Source
AI summary
An intraocular onlay includes a body with an optic portion and feet, the optic portion includes an anterior surface and a posterior surface, an annular mask of a selected optical opacity forming a pinhole, and a second optically transparent region exterior to the annular mask, where the feet extend from optic portion to be positioned within a capsular bag and rest on top of an existing intraocular lens that is located in the capsular bag.