Intraocular Pseudophakic Contact Lens Haptic Ridge Capture
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Solution Overview
Problem
Age-related macular degeneration (AMD) leads to significant visual impairment and irreversible vision loss, particularly affecting individuals over 50, with current treatments failing to effectively restore central vision and daily functioning.
Innovation Solution
The development of an intraocular pseudophakic contact lens (IOPCL)-based telescopic approach, which includes an optical lens and haptics that extend radially and are secured to an artificial intraocular lens, creating a Galilean vision system to enhance magnification and improve visual acuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an intraocular pseudophakic contact lens is mounted on an artificial intraocular lens to improve magnification and visual acuity, then visual function is improved, but device complexity increases
Solution Approach 1:
The patent combines the artificial intraocular lens and the pseudophakic contact lens into a single integrated implantable device. The contact lens is mounted directly on the artificial intraocular lens, merging two separate optical components into one unified system that provides both standard vision correction and magnification functionality.
Solution Approach 2:
The integrated device serves multiple functions: it acts as both an artificial intraocular lens for basic vision correction and a pseudophakic contact lens for magnification. This multi-functional design allows a single implant to address both distance vision and magnified viewing needs, reducing the requirement for multiple separate devices.
2Reliability
If haptics are designed to be inserted under the anterior leaflet of the capsular wall to secure the lens, then reliability of lens positioning is improved, but ease of operation during implantation deteriorates
Solution Approach 1:
The haptics are designed to be inserted and nested within the capsular bag structure, specifically under the anterior leaflet of the capsular wall. This nesting approach allows the haptics to be concealed within the existing anatomical structure, providing secure positioning while maintaining a minimally invasive implantation profile.
3Reliability
If the haptics are made flexible to drive ridges into the artificial intraocular lens edge, then securing mechanism reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The haptics are designed with flexible material properties and specific geometric parameters that allow them to deform and drive ridges into the artificial intraocular lens edge. The flexibility parameter enables the haptics to accommodate manufacturing tolerances while still achieving reliable mechanical engagement through the ridge capture mechanism.
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
This approach enables customized vision correction, significantly improving magnification and visual acuity in patients with AMD, allowing them to regain the ability to read normal print and potentially restore driving privileges.
Implementation Method 1
an optical lens and haptics extending radially from the optical lens
Implementation Method 2
The haptics are flexible such that outer portions of the haptics are configured to drive the ridges into the at least one edge of the artificial intraocular lens based on surface pressure from the anterior leaflet against the outer portions of the haptics
Data Source
AI summary
An apparatus includes an intraocular pseudophakic contact lens configured to be implanted in an eye and mounted on or attached to an artificial intraocular lens in the eye. The intraocular pseudophakic contact lens includes (i) an optical lens and (ii) haptics extending radially from the optical lens and configured to be inserted under an anterior leaflet of a capsular wall in the eye. Posterior surfaces of the haptics include ridges configured to capture at least one edge of the artificial intraocular lens. The haptics are flexible such that outer portions of the haptics are configured to drive the ridges into the at least one edge of the artificial intraocular lens based on surface pressure from the anterior leaflet against the outer portions of the haptics.