US-20260124032-A1 - INTRAOCULAR LENSES HAVING CLOSED-LOOP RING HAPTIC STRUCTURES

US20260124032A1US 20260124032 A1US20260124032 A1US 20260124032A1US-20260124032-A1

Abstract

An ophthalmic device includes an optic including an optic axis and a periphery and a closed-loop ring haptic structure coupled with the optic. The closed loop haptic structure includes a first ring structure having a first characteristic length, a second ring structure having a second characteristic length, and a plurality of connectors coupling the first ring structure and the second ring structure. The first ring structure is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic, and the first characteristic length is less than the second characteristic length.

Inventors

Stephen John Collins
Jian Liu
Michael Lee Mangum
Douglas Brent Wensrich

Assignees

ALCON INC.

Dates

Publication Date: 20260507
Application Date: 20251231

Claims (11)

1 . An ophthalmic device comprising: an optic including an optic axis and a periphery; and a closed-loop ring haptic structure coupled with the optic and including a first ring having a first characteristic length, a second ring having a second characteristic length, and a plurality of connectors coupling the first ring and the second ring, wherein: the first ring is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic; and the first characteristic length is less than the second characteristic length.
2 . The ophthalmic device of claim 1 , wherein each of the plurality of connectors extends in a substantially radial direction.
3 . The ophthalmic device of claim 1 , wherein each of the plurality of connectors is curved such that each of the plurality of connectors includes a first component extending in a substantially radial direction and a component extending in a direction substantially perpendicular to the radial direction.
4 . The ophthalmic device of claim 1 , wherein the second ring further includes a third characteristic length.
5 . The ophthalmic device of claim 4 , wherein the first ring includes a plurality of apertures.
6 . The ophthalmic device of claim 1 , wherein: the optic and the first ring are located in a first plane that is substantially perpendicular to the optical axis.
7 . The ophthalmic device of claim 6 , wherein the first plane is posterior of the second plane.
8 . The ophthalmic device of claim 6 , wherein each of the plurality of connectors includes a component extending parallel to the optical axis.
9 . The ophthalmic device of claim 1 , wherein at least one of the plurality of connectors comprises a plurality of struts.
10 . The ophthalmic device of claim 1 , wherein the plurality of connectors comprises a first set of ring structures connected to the first ring and a second set of ring structures connected to the second ring.
11 . The ophthalmic device of claim 1 , wherein the second ring comprises a plurality of apertures, such that at least a portion of the second ring is offset along the optic axis from the first ring.

Description

PRIORITY CLAIM This application is a continuation of U.S. Non-Provisional patent application Ser. No. 17/141,526, filed on Jan. 5, 2021, which is a continuation of U.S. Non-Provisional patent application Ser. No. 16/144,570, filed on Sep. 27, 2018, now U.S. Pat. No. 10,905,544, which claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 62/564,001 titled “INTRAOCULAR LENSES HAVING CLOSED-LOOP RING HAPTIC STRUCTURES,” filed on Sep. 27, 2017, whose inventors are Stephen John Collins, Douglas Brent Wensrich, Michael Lee Mangum, Jian Liu, which is hereby incorporated by reference in its entirety as though fully and completely set forth herein. FIELD The present disclosure relates generally ophthalmic lenses and, more particularly, to intraocular lenses having closed-loop ring haptic structures. BACKGROUND Intraocular lenses (IOLs) may be implanted in patients'eyes to replace a patient's natural lens. An IOL typically includes (1) an optic that corrects the patient's vision (e.g., typically via refraction or diffraction), and (2) haptics that constitute support structures that hold the optic in place within the patient's eye (e.g., within capsular bag). In general, a physician selects an IOL for which the optic has the appropriate corrective characteristics for the patient. During ophthalmic surgery, often performed for conditions such as cataracts, the surgeon implants selected IOL by making an incision in the capsular bag of the patient's eye (a capsulorhexis) and inserting the IOL through the incision. Typically, the IOL is folded for insertion into the capsular bag via a corneal incision and unfolded once in place within the capsular bag. During unfolding, the haptics may expand such that a small section of each bears on the capsular bag, retaining the IOL in place. Although existing IOLs may function acceptably well in many patients, they also have certain shortcomings. For example, existing IOL design may include haptics that cause striae, or folds, in the posterior capsular bag. Such striae may result from the haptics having a relatively small angle of contact with the capsular bag. Because striae may negatively impact patient outcomes (e.g., by resulting in increased posterior capsular opacification (PCO) by providing a mechanism for the growth and/or migration of cells), haptic designs that reduce striae are desirable. Moreover, such designs should also have a volume and foldability conducive to maintaining acceptably small incision sizes (e.g., 3 mm or less) as larger incision may adversely affect the patient's recovery. Accordingly, what is needed is an improved IOL that may address PCO (e.g., by reducing striae) without significantly complicating implantation. BRIEF SUMMARY OF THE INVENTION An ophthalmic device includes an optic including an optic axis and a periphery and a closed-loop ring haptic structure coupled with the optic. The closed loop haptic structure includes a first ring structure having a first characteristic length, a second ring structure having a second characteristic length, and a plurality of connectors coupling the first ring structure and the second ring structure. The first ring structure is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic, and the first characteristic length is less than the second characteristic length. In certain embodiments, the closed-loop haptic structure described herein may result in fewer striae and reduced PCO, yet may be relatively easily implanted. Consequently, performance of the ophthalmic device may be improved. BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following description taken in conjunction with the accompanying drawings in which like reference numerals indicate like features and wherein: FIGS. 1A-1B depict various views of an exemplary embodiment of an ophthalmic device having a closed-loop haptic structure; FIG. 2 depicts another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; FIGS. 3A-3B depict another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; FIGS. 4A-4B depict another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; FIGS. 5A-5B depict another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; FIGS. 6A-6B depict various views of another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; FIGS. 7A-7B depict various views of another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure; and FIGS. 8A-8B depict various views of another exemplary embodiment of an ophthalmic device having a closed-loop ring haptic structure. The skilled person in the art will understand that the drawings, described below, are for illustration p