Adjustable Intraocular Lens with Laser-Activated Peripheral Zone
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Solution Overview
Problem
The challenge in intraocular lens (IOL) implantation is predicting refractive outcomes post-surgery, as position changes and tilts due to healing processes can lead to refractive deviations, necessitating further surgical interventions to correct optical effects.
Innovation Solution
An IOL with an activatable zone that can be deformed using laser radiation to change the lens's position, rotation, or tilt without affecting the central optical region, allowing for adjustments to refractive power and alignment without the need for additional surgical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laser radiation is applied to the central region of the lens body to change optical effect, then refractive power can be adjusted, but light scattering and degradation of the central optical region occur
Solution Approach 1:
The lens body is divided into two functional zones: a central optical region for light transmission and an peripheral activatable zone for laser-induced deformation. This segmentation allows selective laser application to the activatable zone only, avoiding damage to the central optical region while enabling refractive power adjustment.
Solution Approach 2:
The lens body has different properties in different regions: the central region is optimized for optical clarity and light transmission, while the peripheral activatable zone is designed with specific material properties that enable laser-induced deformation. This local differentiation allows the laser to affect only the intended region for adjustment.
2Manufacturing precision
If further intraocular lens exchange is performed to correct refractive deviations, then optical accuracy can be improved, but surgical trauma and risk increase
Solution Approach 1:
The lens body is designed with dynamic adjustability through the activatable zone that can be selectively deformed by laser radiation. This allows the refractive power to be changed after implantation without requiring surgical removal and replacement, transforming a static lens into a dynamically adjustable one.
Solution Approach 2:
The intraocular lens incorporates a self-adjusting mechanism where the activatable zone can be modified by laser radiation to correct refractive deviations. This self-service capability eliminates the need for surgical intervention to adjust the lens, reducing trauma and risk while maintaining optical accuracy.
3Manufacturing precision
If the activatable zone is irradiated with laser radiation to change lens position or tilt, then refractive deviations can be corrected, but the lens structure becomes more complex
Solution Approach 1:
The lens is segmented into a central optical region and a peripheral activatable zone with specific structural features (such as hollow regions or folded structures) that enable controlled deformation. This segmentation allows precise control of lens position and tilt through selective irradiation of the activatable zone.
Solution Approach 2:
The activatable zone is designed with specific structural parameters (hollow regions, folded structures, material properties) that can be changed through laser irradiation. These parameter changes enable controlled deformation of the lens to correct alignment deviations while maintaining overall structural integrity.
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
Enables precise correction of refractive deviations and tilts by selectively irradiating the activatable zone, reducing the need for further IOL exchanges and maintaining the integrity of the central optical region, thereby improving surgical outcomes and patient vision.
Implementation Method 1
upon only irradiating the activatable zone with laser radiation
Implementation Method 2
the lens body is deformed in the central region
Implementation Method 3
The activatable zone of the intraocular lens can comprise an elastically deformed region which expands at least partly upon being irradiated with the laser radiation
Implementation Method 4
upon being irradiated with the laser radiation
Data Source
AI summary
An intraocular lens provided for implantation into an eye, includes a lens body having a central region, haptics for holding the intraocular lens in place within the eye after implantation, and an activatable zone outside the central region. After implantation of the intraocular lens into the eye, the lens body is deformed in the central region and/or at least one of the position, the rotation or the tilt of the intraocular lens within the eye changes upon irradiating only the activatable zone with laser radiation.