WO1984004449A1 - Focussable intraocular lens - Google Patents

Focussable intraocular lens Download PDF

Info

Publication number
WO1984004449A1
WO1984004449A1 PCT/US1983/000733 US8300733W WO8404449A1 WO 1984004449 A1 WO1984004449 A1 WO 1984004449A1 US 8300733 W US8300733 W US 8300733W WO 8404449 A1 WO8404449 A1 WO 8404449A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
lens element
toward
position
ciliary body
Prior art date
Application number
PCT/US1983/000733
Other languages
French (fr)
Inventor
Chauncey F Levy
Original Assignee
Chauncey F Levy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chauncey F Levy filed Critical Chauncey F Levy
Priority to PCT/US1983/000733 priority Critical patent/WO1984004449A1/en
Publication of WO1984004449A1 publication Critical patent/WO1984004449A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16Intraocular lenses
    • A61F2/1613Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • A61F2/1648Multipart lenses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16Intraocular lenses
    • A61F2/1613Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16Intraocular lenses
    • A61F2/1613Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
    • A61F2/1624Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A61F2/1629Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside for changing longitudinal position, i.e. along the visual axis when implanted

Abstract

An intraocular lens that provides accomodation in response to contraction and relaxation of the ciliary body (14). Accomodation is achieved by motion of the lens (10), or of an element (30, 32) of a lens system, alternately toward and away from the fovea. Means (16, 18) are provided for biasing the lens (10), or the movable element (32), toward the fovea so that when the ciliary body (14) contracts it counters the bias and causes the lens (10) to move away from the fovea toward the cornea.

Description

FOCUSSABLE INTRAOCULAR LENS Brief Description:

This invention relates to a novel intraocular lens that is capable of providing accommodation responsively to contraction and relaxation of the ciliary body.

In the normal eye the crystalline lens is self-biasedtoward a spher¬ ical shape, that is, toward maximum r fraction, and for distance view¬ ing it is radially tensioned, andthereby flattened by relaxation of the ciliary body.

The lens of the present invention operates on a basically different principle, one generally similar to the usual focussing arrangement in photographic cameras. It achieves accommodation by adjustment of its focal distance, the spacing between the lens and the fovea. The lens is spring biased toward its distance focus position, where it remains so long as the ciliary body remains relaxed. When the ciliary body con¬ tracts it compresses the spring bias, moving the lens away from the fovea to provide accommodation for near viewing.

The bias may be supplied by radially extending struts molded integ¬ rally with the lens, which struts extend slightly rearwardly from the lens to engage, or, rather, to be engaged by the ciliary body. When the ciliary body contracts it thus drives the outer ends of the struts radi¬ ally inwardly causing their inner ends to move forwardly, carrying the lens forwardly and thereby increasing its focal distance.

Alternative forms of the inventin may include miniature lens sys¬ tems of two or more lens elements in accordance with the designer 's choice. In the usual case only one of the elements of a system is ar¬

/ . ranged for movement responsively to the ciliary body, while the other, or others, of the individual elements remain in fixed position.

The lens of the invention is preferably placed in the natural cap¬ sule that previously held the crystalline lens, and the zonules are left in place, unless they are somehow damaged, in which case they may be

OMPI

~ replaced by an air filled flexible toroid. The capsule serves to hold the lens, and especially the struts, in proper position for engagement by the ciliary body. As in the usual modern practice only a portion of the front wall of the capsule is removed, and a small window is cut in its rear wall. The struts extend to the perimeter of the capsule, and the entire structure is retained by the capsule. Detailed Description:

Representative embodiments of the invention will now be described in detail in conjunction with the drawing, wherein:

Figure 1 is a cross sectional view of an intraocular lens in accord¬ ance with a first embodiment of the invention;

Figure 2 is a front elevational view of the lens shown in Figure It

Figure 3 is a fragmentary sectional view of an eye in which the lens shown in Figures 1 and 2 has been implanted t

Figure 4 is a fragmentary sectional view of an eye in which a lens according to a modified form of the invention has been implanted; and

Figure 5 is a fragmentary sectional view of an eye in which the zon- ules have been replaced by an air filled torus.

Referring now to Figures 1 , 2, and 3, the lens according to the first embodiment of the invention comprises a central refractive element 10 about six millimeters in diameter and having a refractive power se¬ lected by the surgeon to provide normal distance vision when it is im¬ planted in the capsule 12 and the ciliary body is relaxed. Radially extending struts 16 are molded integrally with the refractive element 10 and are terminated at their outer ends by any desired blunt abutment means such as the arcuate rim portions 18 illustrated. The struts are just long enough so that the terminations 18 are in light pressure con¬ tact with the perimeter of the capsule 12 when the lens is implanted in the eye 20. The struts lie at an angle to the central plane of the refractive element 10 so that the terminations 18 lie slightly closer to the fovea when the lens is implanted than does the refractive element 10.

As indicated by the dashed lines in Figure 3, when the ciliary body 14 contracts, as it normally does when the eye tries to focus on a nearby object, it drives the outer ends of the struts 16 radially inwardly, thereby forcing the lens 10 forwardly, away from the fovea, and, as the ciliary body relaxes the struts act as springs to retract the refractive element 10 back to its original position for distance focus. It is preferred to make the refractive element 10 as small as is practicable, that is, as small as is needed to admit enough light for practical vision. This is to minimize resistance to motion of the re¬ fractive element by the aqueous humour, or by the saline solution that may replace it. It is presently thought that about six millimeters diameter is close to the optimum size.

An intraocular system comprising two lens elements 30 and 32, respectively, according to the invention is illustrated in Figure 4. It comprises a posterior lens element 30 of significantly smaller diameter than the capsule 12. It is positioned centrally within the capsule 12 in contact with the posterior wall thereof. It remains in position because of the smallness of forces available to dislodge it as compared to its natural adherence to the capsule wall.

The second element 32 lies in the anterior chamber of the eye, and is generally similar to the lens 10 shown in Figures 1, 2, and 3, being supported on struts 34 that extend rearwardly and radially outwardly through the fornix in the anterior wall of the capsule 12 into engage ment with the perimeter of the capsule. The powers of the lenses 30 and 32, and the initial spacing between them are selected by the optical designer to provide the desired focussing action in response to motion of the movable lens 32. A large variety of choices is available.

As shown in Figure 5, the zonules 40 (Figures 3 and 4, and not shown in Figure 5) may be removed and replaced by an air filled torus 42 that acts as a cushion between the lens 10 and the ciliary body 14, and also serves to keep the lens 10 in proper position relative to the ciliary body. The torus 42 may be made of any flexible and impervious sheet material that is compatible with body tissues and fluids.

*\

Claims

WHAT IS CLAIMED IS:
1. An intraocular lens capable of providing aαxmmodation cαπpris- ing a lens element, and spring biasing means operative between said lens element and the ciliary body when the lens element is implanted for alternately moving the lens element toward a first position relative to the fovea when the ciliary bocty is relaxed and toward a second posi¬ tion farther frαn the fovea in response to contraction of the ciliary body.
2. An intraocular lens in accordance with claim 1 wherein said spring biasing means comprises struts extending radially outwardly frαα said lens element toward the ciliary body and rearwardly so that their outer ends lie closer to the fovea than does said lens element, the angle between the lengths of said struts and the central plane of said lens being resiliently yieldable in response to contraction of the ciliary bcdy.
3. An intraocular lens according to claim 1 wherein said lens element and said spring biasing means are arranged for implantation within the capsule that holds the crystalline lens in the normal eye.
4. An intraocular lens system capable of providing ac__X-__-nodat_ion cαπprising a first lens element for implantation in fixed position in the eyer a second lens element to be spaced frαn said first lens element along the main optical axis of the eye, and spring biasing means oper¬ ative between said second lens element and the ciliary body when the second lens element is implanted for alternately moving said second lens element toward a first position along the optical axis when the ciliary bocty is relaxed and toward a second position when the ciliary body con¬ tracts, the optical specifications of said lens elements being selected so that the focal length of the system is longer when said second element is toward said second position than when it is toward said first position.
5. An .intraocular lens system according to claim 4 wherein said first lens element is arranged for implantation within the capsule of the eye against the posterior wall thereof, said second lens element and said spring biasing means are arranged for implantation in the anter¬ ior chamber with said spring biasing means extendi g into the capsule and engaging the perimeter thereof, and said second position of said second element is farther from the fovea than said first position.
PCT/US1983/000733 1983-05-13 1983-05-13 Focussable intraocular lens WO1984004449A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1983/000733 WO1984004449A1 (en) 1983-05-13 1983-05-13 Focussable intraocular lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19830902039 EP0150174A4 (en) 1983-05-13 1983-05-13 Focussable intraocular lens.
PCT/US1983/000733 WO1984004449A1 (en) 1983-05-13 1983-05-13 Focussable intraocular lens

Publications (1)

Publication Number Publication Date
WO1984004449A1 true WO1984004449A1 (en) 1984-11-22

Family

ID=22175134

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1983/000733 WO1984004449A1 (en) 1983-05-13 1983-05-13 Focussable intraocular lens

Country Status (2)

Country Link
EP (1) EP0150174A4 (en)
WO (1) WO1984004449A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006520A1 (en) * 1988-01-14 1989-07-27 Gerald Horn Intraocular lens assemblies
FR2832920A1 (en) 2001-11-30 2003-06-06 Visional Accommodative intraocular implant has deformable haptic section that can change in shape with movements of ciliary muscle
FR2833477A1 (en) * 2002-07-02 2003-06-20 Francois Michel Optical equipment for long sightedness correction implant leads optical edge to activator varying length of edge in response to control signal resulting from pressure sensors
EP1457171A2 (en) * 1993-08-27 2004-09-15 Medevec Licensing B.V. Accommodating intraocular lens
EP1462071A3 (en) * 1997-12-09 2004-12-22 J. Stuart Cumming Accommodating intraocular lens
US7097660B2 (en) 2001-12-10 2006-08-29 Valdemar Portney Accommodating intraocular lens
US7226478B2 (en) 2001-01-25 2007-06-05 Visiogen, Inc. Optic configuration for intraocular lens system
US7238201B2 (en) 2003-02-13 2007-07-03 Visiogen, Inc. Accommodating intraocular lens system with enhanced range of motion
US8182531B2 (en) 2006-12-22 2012-05-22 Amo Groningen B.V. Accommodating intraocular lenses and associated systems, frames, and methods
US8343216B2 (en) 2002-01-14 2013-01-01 Abbott Medical Optics Inc. Accommodating intraocular lens with outer support structure
US8425597B2 (en) 1999-04-30 2013-04-23 Abbott Medical Optics Inc. Accommodating intraocular lenses
US9005283B2 (en) 2004-04-16 2015-04-14 Visiogen Inc. Intraocular lens
US9011532B2 (en) 2009-06-26 2015-04-21 Abbott Medical Optics Inc. Accommodating intraocular lenses
US9039760B2 (en) 2006-12-29 2015-05-26 Abbott Medical Optics Inc. Pre-stressed haptic for accommodating intraocular lens
US9271830B2 (en) 2002-12-05 2016-03-01 Abbott Medical Optics Inc. Accommodating intraocular lens and method of manufacture thereof
US9603703B2 (en) 2009-08-03 2017-03-28 Abbott Medical Optics Inc. Intraocular lens and methods for providing accommodative vision
US9814570B2 (en) 1999-04-30 2017-11-14 Abbott Medical Optics Inc. Ophthalmic lens combinations
US9968441B2 (en) 2008-03-28 2018-05-15 Johnson & Johnson Surgical Vision, Inc. Intraocular lens having a haptic that includes a cap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074368A (en) * 1976-09-08 1978-02-21 Said Chauncey F. Levy, Jr., By Said Richard J. Pegis Intraocular lens with high magnification
US4253199A (en) * 1978-09-25 1981-03-03 Surgical Design Corporation Surgical method and apparatus for implants for the eye
US4285072A (en) * 1979-05-14 1981-08-25 Harry H. Leveen Anterior-posterior intraocular lens
GB2071352A (en) * 1980-02-26 1981-09-16 Lynell Med Tech Inc Extraocular contact lens construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074368A (en) * 1976-09-08 1978-02-21 Said Chauncey F. Levy, Jr., By Said Richard J. Pegis Intraocular lens with high magnification
US4253199A (en) * 1978-09-25 1981-03-03 Surgical Design Corporation Surgical method and apparatus for implants for the eye
US4285072A (en) * 1979-05-14 1981-08-25 Harry H. Leveen Anterior-posterior intraocular lens
GB2071352A (en) * 1980-02-26 1981-09-16 Lynell Med Tech Inc Extraocular contact lens construction

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006520A1 (en) * 1988-01-14 1989-07-27 Gerald Horn Intraocular lens assemblies
EP1637094A2 (en) * 1993-08-27 2006-03-22 Medevec Licensing B.V. Accommodating intraocular lens
EP1637094A3 (en) * 1993-08-27 2006-03-29 Medevec Licensing B.V. Accommodating intraocular lens
EP1457171A2 (en) * 1993-08-27 2004-09-15 Medevec Licensing B.V. Accommodating intraocular lens
EP1457171A3 (en) * 1993-08-27 2005-05-18 Medevec Licensing B.V. Accommodating intraocular lens
EP1462071A3 (en) * 1997-12-09 2004-12-22 J. Stuart Cumming Accommodating intraocular lens
US9814570B2 (en) 1999-04-30 2017-11-14 Abbott Medical Optics Inc. Ophthalmic lens combinations
US8425597B2 (en) 1999-04-30 2013-04-23 Abbott Medical Optics Inc. Accommodating intraocular lenses
US7226478B2 (en) 2001-01-25 2007-06-05 Visiogen, Inc. Optic configuration for intraocular lens system
FR2832920A1 (en) 2001-11-30 2003-06-06 Visional Accommodative intraocular implant has deformable haptic section that can change in shape with movements of ciliary muscle
US7097660B2 (en) 2001-12-10 2006-08-29 Valdemar Portney Accommodating intraocular lens
US9504560B2 (en) 2002-01-14 2016-11-29 Abbott Medical Optics Inc. Accommodating intraocular lens with outer support structure
US8343216B2 (en) 2002-01-14 2013-01-01 Abbott Medical Optics Inc. Accommodating intraocular lens with outer support structure
FR2833477A1 (en) * 2002-07-02 2003-06-20 Francois Michel Optical equipment for long sightedness correction implant leads optical edge to activator varying length of edge in response to control signal resulting from pressure sensors
WO2004004605A1 (en) * 2002-07-02 2004-01-15 Michel Francois Pseudoaccommodative equipment implanted for presbyopia correction
US9271830B2 (en) 2002-12-05 2016-03-01 Abbott Medical Optics Inc. Accommodating intraocular lens and method of manufacture thereof
US10206773B2 (en) 2002-12-05 2019-02-19 Johnson & Johnson Surgical Vision, Inc. Accommodating intraocular lens and method of manufacture thereof
US7238201B2 (en) 2003-02-13 2007-07-03 Visiogen, Inc. Accommodating intraocular lens system with enhanced range of motion
US9005283B2 (en) 2004-04-16 2015-04-14 Visiogen Inc. Intraocular lens
US8496701B2 (en) 2006-12-22 2013-07-30 Amo Groningen B.V. Accommodating intraocular lenses and associated systems, frames, and methods
US8182531B2 (en) 2006-12-22 2012-05-22 Amo Groningen B.V. Accommodating intraocular lenses and associated systems, frames, and methods
US9039760B2 (en) 2006-12-29 2015-05-26 Abbott Medical Optics Inc. Pre-stressed haptic for accommodating intraocular lens
US9968441B2 (en) 2008-03-28 2018-05-15 Johnson & Johnson Surgical Vision, Inc. Intraocular lens having a haptic that includes a cap
US9011532B2 (en) 2009-06-26 2015-04-21 Abbott Medical Optics Inc. Accommodating intraocular lenses
US10052194B2 (en) 2009-06-26 2018-08-21 Johnson & Johnson Surgical Vision, Inc. Accommodating intraocular lenses
US9603703B2 (en) 2009-08-03 2017-03-28 Abbott Medical Optics Inc. Intraocular lens and methods for providing accommodative vision

Also Published As

Publication number Publication date
EP0150174A1 (en) 1985-08-07
EP0150174A4 (en) 1986-12-08

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