Accommodating intraocular lens assembly with multi-functional capsular bag ring
First Claim
1. An intraocular lens assembly comprising:
- an optic adapted to focus light to a retina of an eye and having a central optical axis; and
accommodation means for positioning the optic in the capsular bag of an eye, the capsular bag including an equator, a posterior wall and an anterior flap, the accommodation means includingfirst means encircling the optic for transmitting axial forces and radial forces to a second means for maintaining the optic in forwardly spaced relationship to the posterior wall of the capsular bag, causing axial movement of the optic;
the second means extending outside and beyond an outer perimeter of the first means.
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Accused Products
Abstract
An intraocular lens (IOL) has been provided with an accommodation assembly that effects axial movement of the IOL optic through both the radial action of ciliary muscles and the axial forces resulting from vitreous pressure on the posterior wall of the capsular bag. In a preferred embodiment, the assembly comprises an IOL having substantially rigid, posteriorly extending fixation members which extend through slots in an accommodation ring encircling the optic. Axial forces exerted by vitreous fluids on the posterior wall of the capsular bag are transmitted from the posterior wall to the ring to the fixation members at the slot areas, causing axial movement of the IOL. At the same time, the angulation of the haptics converts radial forces due to contraction or expansion of the capsular bag into axial forces, causing still more axial movement of the IOL.
270 Citations
19 Claims
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1. An intraocular lens assembly comprising:
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an optic adapted to focus light to a retina of an eye and having a central optical axis; and accommodation means for positioning the optic in the capsular bag of an eye, the capsular bag including an equator, a posterior wall and an anterior flap, the accommodation means including first means encircling the optic for transmitting axial forces and radial forces to a second means for maintaining the optic in forwardly spaced relationship to the posterior wall of the capsular bag, causing axial movement of the optic; the second means extending outside and beyond an outer perimeter of the first means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An intraocular lens assembly for insertion into an eye having a capsular bag controlled by a ciliary muscle, the capsular bag including an equator, a posterior wall, and an anterior flap, the assembly including:
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an intraocular lens comprising an optic having an optic axis and a plurality of fixation members extending radially from the optic; and an accommodation ring configured to extend around the optic in radially spaced relationship thereto, the accommodation ring having a posterior surface for placement against the posterior wall of the capsular bag, an anterior surface for placement against the anterior flap of the capsular bag, and an outer perimeter, each of the fixation members extending outside and beyond the outer perimeter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification