Modular intraocular lens designs and methods

摘要

A modular IOL system including intraocular primary and secondary components, which, when combined, form an intraocular optical correction device, wherein the secondary component is placed on the primary component within the perimeter of the capsulorhexis, thus avoiding the need to touch or otherwise manipulate the capsular bag. The secondary component may be manipulated, removed, and/or exchanged for a different secondary component for correction or modification of the optical result, on an intra-operative or post-operative basis, without the need to remove the primary component and without the need to manipulate the capsular bag. The primary component may have haptics extending therefrom for centration in the capsular bag, and the secondary component may exclude haptics, relying instead on attachment to the primary lens for stability. Such attachment may reside radially inside the perimeter of the capsulorhexis and radially outside the field of view to avoid interference with light transmission.

主权项

1. A modular intraocular lens system for implantation in an eye, comprising:
(a) an annular base having an inner perimeter defining a center hole and an outer perimeter with two or more haptics extending outwardly therefrom, the inner perimeter including a continuous circumferential recess having a ledge extending around an entirety of the inner perimeter, the continuous circumferential recess having an anterior rim and a posterior rim, wherein an inside diameter of the anterior rim is greater than an inside diameter of the posterior rim; (b) a lens disposed over the center hole in the continuous circumferential recess on the ledge of the annular base to form an overlapping joint between the lens and the annular base, wherein the joint is configured to permit insertion and removal of the lens to and from the annular base; (c) wherein the lens has an optical axis, and has a resting position along the optical axis relative to the annular base when disposed in the continuous circumferential recess; and (d) wherein the lens includes a pair of extensions disposed in the continuous circumferential recess that are configured to allow a change in rotational position of the lens relative to the annular base and maintain the resting position, and the pair of extensions comprises a pair of pegs, wherein the pair of pegs are disposed in a pair of holes in the annular base.