Intraocular lens with post-implantation adjustment capabilities

a technology of intraocular lens and adjustment capability, applied in the field of intraocular lens, can solve the problems of known lenses suffering from a variety of drawbacks, and achieve the effect of reducing separation between viewing elements and increasing relative movemen

Inactive Publication Date: 2009-09-10
VISIOGEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]Some embodiments comprise an accommodating intraocular lens. The lens comprises an anterior portion comprised of a viewing element, the viewing element comprised of an optic having refractive power, and a posterior portion comprised of a viewing element. The viewing elements are mounted to move relative to each other along the optical axis in response to force generated by the ciliary muscle of the eye. The lens further comprises a distending portion comprised of a distending member attached to one of the portions, and oriented to distend the lens capsule. The distending causes the lens capsule to act on at least one of the posterior and anterior portions such that separation between the viewing elements is reduced when the ciliary muscle is relaxed and the lens is in an unaccommodated state.
[0024]Some embodiments comprise an accommodating intraocular lens. The lens comprises an anterior portion comprised of a viewing element, the viewing element comprised of an optic having refractive power, and a posterior portion comprised of a viewing element. The viewing elements are mounted to move relative to each other along the optical axis in response to force generated by the ciliary muscle of the eye. The lens further comprises a distending member attached to the posterior portion. The distending member is separate from the biasing members and reshapes the lens capsule such that force coupling between the ciliary muscle and the lens is modified to provide greater relative movement between the viewing elements when the lens moves between an unaccommodated state and an accommodated state in response to the ciliary muscle.

Problems solved by technology

Known lenses can suffer from a variety of drawbacks.

Method used

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  • Intraocular lens with post-implantation adjustment capabilities
  • Intraocular lens with post-implantation adjustment capabilities
  • Intraocular lens with post-implantation adjustment capabilities

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embodiment 600

[0232]FIG. 35 is a schematic view of a two-piece embodiment 600 of the lens system. In this embodiment the anterior portion 102 and the posterior portion 104 are formed as separate pieces which are intended for separate insertion into the capsular bag and subsequent assembly therein. In one embodiment, each of the anterior and posterior portions 102, 104 is rolled or folded before insertion into the capsular bag. (The insertion procedure is discussed in further detail below.) The anterior portion 102 and posterior portion 104 are represented schematically as they may generally comprise any anterior-portion or posterior-portion structure disclosed herein; for example, they may simply comprise the lens system 100 shown in FIGS. 3-17, bisected along the line / plane A-A shown in FIG. 4. The anterior portion 102 and posterior portion 104 of the two-piece lens system 600 will include first and second abutments 602, 604 which are intended to be placed in abutting relation (thus forming the ...

embodiment 800

[0235]FIGS. 37 and 38 show a further embodiment 800 of the lens system, in which the anterior and posterior biasing elements 108, 120 comprise integral “band” like members forming, respectively, the first and second anterior translation members 110, 114 and the first and second posterior translation members 122, 124. The biasing elements 108, 120 also form reduced-width portions 802, 804 which meet at the apices of the lens system 800 and provide regions of high flexibility to facilitate sufficient accommodative movement. The depicted distending portion 132 includes three pairs of distending members 134, 136 which have a curved configuration but nonetheless project generally away from the optical axis.

[0236]FIGS. 38A and 38B depict another embodiment 900 of the lens system, as implanted in the capsular bag 58. The embodiment shown in FIGS. 38A and 38B may be similar to any of the embodiments described above, except that the biasing elements 108, 120 are dimensioned so that the apice...

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Abstract

Disclosed are accommodating intraocular lenses for implantation in an eye having an optical axis. In certain embodiments, an intraocular lens includes an anterior optic, a posterior optic, and a support structure configured to move the optics relative to each other along an optical axis between an accommodated state and an unaccommodated state. In certain embodiments, at least a portion of the support structure can be modified in situ to alter reaction forces between the support structure and at least one structure of the eye. In certain embodiments, a refractive property of one of the anterior or posterior optics can be modified in situ while leaving the refractive properties of the remaining one of the anterior or posterior optics substantially unaffected. Additional embodiments and methods are also disclosed.

Description

RELATED APPLICATION[0001]This application is related to, and claims the benefit of U.S. Provisional 60 / 948,170 filed Jul. 5, 2007, the entirety of which is hereby incorporated by reference herein and made a part of the present specification.BACKGROUND[0002]1. Field[0003]The inventions relate to lenses and, more particularly, to intraocular lenses, the performance of which can be adjusted post-operatively or anytime after implantation in the eye.[0004]2. Description of the Related Art[0005]Cataract operations frequently involve the implantation of an artificial lens following cataract removal. Often, these lenses have a fixed focal length or, in the case of bifocal or multifocal lenses, can have several different fixed focal lengths. Known lenses can suffer from a variety of drawbacks.SUMMARY[0006]In some embodiments, a method of modifying an accommodating intraocular lens having an anterior optic, a posterior optic, and a support structure is provided. The method can involve modifyi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2250/0001A61F2/1648A61F2/1629A61F2/1627A61F2250/0004
Inventor ZADNO-AZIZI, GHOLAM-REZA
Owner VISIOGEN
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