Intraocular Pseudophakic Contact Lens Capsular Securing Mechanism
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Solution Overview
Problem
Conventional methods for correcting residual refractive errors after intraocular lens implantation are invasive, unpredictable, and carry high surgical risks, with difficulties in removal and potential for induced visual aberrations.
Innovation Solution
An intraocular pseudophakic contact lens with haptics that secure under the anterior leaflet of the capsular wall, allowing for partial correction of residual refractive errors without the need for invasive procedures, and can be easily replaced or removed.
Engineering Contradictions & Design Principles
Engineering 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
Solution Approach 1:
The patent uses a capsular bag as an intermediary structure to secure the contact lens without direct surgical attachment to the IOL or cornea. The haptics are positioned within the capsular bag, using the natural anatomy as a mediator to achieve securement while minimizing surgical intervention and risk.
Solution Approach 2:
The patent employs a contact lens that optically copies or supplements the function of the IOL by providing additional refractive power. Rather than replacing or surgically modifying existing structures, it adds a separate optical element that works in conjunction with the IOL to correct residual error.
2Ease of repair
If invasive procedures are performed to correct residual refractive error, then vision correction is achieved, but device removal and reversal become difficult
Solution Approach 1:
The patent divides the correction system into separate, independent components: the IOL remains in place while the contact lens is a distinct, removable element. This segmentation allows the contact lens to be independently inserted and removed without affecting the IOL or requiring complex surgical procedures.
Solution Approach 2:
The contact lens is designed as a temporary, easily replaceable component that can be inserted and removed as needed. It functions as a short-term correction device that does not require permanent implantation, allowing for flexibility in treatment and easy reversal if necessary.
3Manufacturing precision
If additional optical elements are added to correct residual refractive error, then vision correction is improved, but optical aberrations may be induced
Solution Approach 1:
The contact lens provides localized refractive correction specifically targeted at the residual error, rather than attempting to correct the entire optical system. The optical power is concentrated where needed to address the specific residual defect without introducing widespread optical disturbances.
Solution Approach 2:
The contact lens provides partial correction of the total refractive error, addressing only the residual portion after IOL implantation. This partial action approach allows for fine-tuning of vision without the risks associated with attempting complete correction through invasive means.
Data Source
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AI summary
An apparatus includes an intraocular pseudophakic contact lens (100, 400, 600, 900, 1100, 1300, 1400, 1600, 1900, 2216). The intraocular pseudophakic contact lens includes an optical lens (102, 402, 602, 902, 1102, 1302, 1402, 1602, 1902) configured to at least partially correct a residual refractive error in an eye (2200). The residual refractive error includes a refractive error that exists in the eye after implantation of an artificial intraocular lens (2210) in the eye. The intraocular pseudophakic contact lens also includes one or more haptics (104a-104b, 404a-404b, 604a-604b, 904a-904b, 1104a-1104b, 1304a-1304c, 1404a-1404b, 1604a-1604b, 1904a-1904b) configured to be inserted under an anterior leaflet (2218) of a capsular wall in the eye in order to capture and confine the one or more haptics under the anterior leaflet and secure the intraocular pseudophakic contact lens against the artificial intraocular lens.