HUP9601126A2 - Concentric, aspheric, multifocal lens - Google Patents

Concentric, aspheric, multifocal lens

Info

Publication number
HUP9601126A2
HUP9601126A2 HU9601126A HUP9601126A HUP9601126A2 HU P9601126 A2 HUP9601126 A2 HU P9601126A2 HU 9601126 A HU9601126 A HU 9601126A HU P9601126 A HUP9601126 A HU P9601126A HU P9601126 A2 HUP9601126 A2 HU P9601126A2
Authority
HU
Hungary
Prior art keywords
aspheric
concentric
multifocal lens
multifocal
lens
Prior art date
Application number
HU9601126A
Other languages
English (en)
Inventor
Edgar V Menezes
Jeffrey H Roffmann
Original Assignee
Johnson & Johnson Vision Prod
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 Johnson & Johnson Vision Prod filed Critical Johnson & Johnson Vision Prod
Publication of HU9601126D0 publication Critical patent/HU9601126D0/hu
Publication of HUP9601126A2 publication Critical patent/HUP9601126A2/hu
Publication of HUP9601126A3 publication Critical patent/HUP9601126A3/hu

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/044—Annular configuration, e.g. pupil tuned
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/042—Simultaneous type
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Eyeglasses (AREA)
  • Prostheses (AREA)
  • Lenses (AREA)
  • Eye Examination Apparatus (AREA)
  • Lens Barrels (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Polarising Elements (AREA)
  • Materials For Medical Uses (AREA)
HU9601126A 1995-05-04 1996-04-29 Concentric, aspheric, multifocal lens HUP9601126A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43384495A 1995-05-04 1995-05-04

Publications (3)

Publication Number Publication Date
HU9601126D0 HU9601126D0 (en) 1996-06-28
HUP9601126A2 true HUP9601126A2 (en) 1997-09-29
HUP9601126A3 HUP9601126A3 (en) 1999-10-28

Family

ID=23721757

Family Applications (3)

Application Number Title Priority Date Filing Date
HU9601126A HUP9601126A3 (en) 1995-05-04 1996-04-29 Concentric, aspheric, multifocal lens
HU9601160A HUP9601160A2 (en) 1995-05-04 1996-05-02 A multifocus, concentric annular ring lens and a method of designing said lens
HU9601155A HUP9601155A2 (en) 1995-05-04 1996-05-02 A concentric annular ring lens for astigmatism

Family Applications After (2)

Application Number Title Priority Date Filing Date
HU9601160A HUP9601160A2 (en) 1995-05-04 1996-05-02 A multifocus, concentric annular ring lens and a method of designing said lens
HU9601155A HUP9601155A2 (en) 1995-05-04 1996-05-02 A concentric annular ring lens for astigmatism

Country Status (17)

Country Link
US (1) US5847802A (hu)
EP (1) EP0742463B1 (hu)
JP (1) JP4183772B2 (hu)
KR (1) KR960040327A (hu)
CN (1) CN1071903C (hu)
AT (1) ATE293802T1 (hu)
AU (1) AU706878B2 (hu)
BR (1) BR9602156A (hu)
CA (1) CA2175654C (hu)
DE (1) DE69634622T2 (hu)
HU (3) HUP9601126A3 (hu)
IL (1) IL118064A0 (hu)
NO (1) NO961806L (hu)
NZ (1) NZ286485A (hu)
SG (1) SG47133A1 (hu)
TW (1) TW317612B (hu)
ZA (1) ZA963532B (hu)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4023902B2 (ja) * 1998-04-10 2007-12-19 株式会社メニコン トーリック・マルチフォーカルレンズ
US6457826B1 (en) 1998-08-06 2002-10-01 John B. W. Lett Multifocal aspheric lens
EP1147448A4 (en) 1998-12-16 2008-12-10 Novartis Ag MULTIFOCAL CONTACT LENSES WITH ASPHERIC SURFACES
US6176580B1 (en) * 1999-04-02 2001-01-23 Johnson & Johnson Vision Care, Inc. Method of designing and fitting contact lenses taking into account material properties of the lenses
US6196685B1 (en) * 1999-04-02 2001-03-06 Johnson & Johnson Vision Care, Inc. Method of designing and fitting multifocal lenses taking into account material properties of the lenses
US20060238702A1 (en) 1999-04-30 2006-10-26 Advanced Medical Optics, Inc. Ophthalmic lens combinations
US20030060881A1 (en) 1999-04-30 2003-03-27 Advanced Medical Optics, Inc. Intraocular lens combinations
US6406494B1 (en) * 1999-04-30 2002-06-18 Allergan Sales, Inc. Moveable intraocular lens
US6790232B1 (en) * 1999-04-30 2004-09-14 Advanced Medical Optics, Inc. Multifocal phakic intraocular lens
US6176579B1 (en) * 1999-07-07 2001-01-23 Softfocal Co., Inc Bifocal contact lens with toric transition
DE10020914B4 (de) * 2000-04-28 2020-07-02 Carl Zeiss Vision Gmbh Verfahren zur Berechnung einer Mehrzahl Brillenlinsen einer Brillenlinsenfamilie sowie Verfahren der Fertigung einer Brillenlinse einer Brillenlinsenfamilie
US6554859B1 (en) 2000-05-03 2003-04-29 Advanced Medical Optics, Inc. Accommodating, reduced ADD power multifocal intraocular lenses
US6609793B2 (en) * 2000-05-23 2003-08-26 Pharmacia Groningen Bv Methods of obtaining ophthalmic lenses providing the eye with reduced aberrations
US8020995B2 (en) 2001-05-23 2011-09-20 Amo Groningen Bv Methods of obtaining ophthalmic lenses providing the eye with reduced aberrations
US6582076B1 (en) 2000-08-30 2003-06-24 Johnson & Johnson Vision Care, Inc. Ophthalmic lenses useful in correcting astigmatism and presbyopia
AU2001289038B2 (en) 2000-09-12 2006-05-18 Revision Optics, Inc. System for packaging and handling an implant and method of use
US8668735B2 (en) 2000-09-12 2014-03-11 Revision Optics, Inc. Corneal implant storage and delivery devices
US6666887B1 (en) * 2000-10-20 2003-12-23 Thinoptx, Inc. Deformable intraocular multi-focus lens
US20120016349A1 (en) 2001-01-29 2012-01-19 Amo Development, Llc. Hybrid ophthalmic interface apparatus and method of interfacing a surgical laser with an eye
US6576012B2 (en) 2001-03-28 2003-06-10 Advanced Medical Optics, Inc. Binocular lens systems
JP2004534964A (ja) * 2001-04-27 2004-11-18 ノバルティス アクチエンゲゼルシャフト 自動レンズ設計及び製造システム
US6638305B2 (en) 2001-05-15 2003-10-28 Advanced Medical Optics, Inc. Monofocal intraocular lens convertible to multifocal intraocular lens
US7763069B2 (en) 2002-01-14 2010-07-27 Abbott Medical Optics Inc. Accommodating intraocular lens with outer support structure
US6923540B2 (en) * 2002-07-31 2005-08-02 Novartis Ag Toric multifocal contact lenses
US20040082993A1 (en) 2002-10-25 2004-04-29 Randall Woods Capsular intraocular lens implant having a refractive liquid therein
US7896916B2 (en) 2002-11-29 2011-03-01 Amo Groningen B.V. Multifocal ophthalmic lens
SE0203564D0 (sv) 2002-11-29 2002-11-29 Pharmacia Groningen Bv Multifocal opthalmic lens
US7662180B2 (en) 2002-12-05 2010-02-16 Abbott Medical Optics Inc. Accommodating intraocular lens and method of manufacture thereof
US6951391B2 (en) * 2003-06-16 2005-10-04 Apollo Optical Systems Llc Bifocal multiorder diffractive lenses for vision correction
US7101042B2 (en) * 2003-08-12 2006-09-05 S.I.B. Investments Llc Multifocal contact lens
US20050131535A1 (en) 2003-12-15 2005-06-16 Randall Woods Intraocular lens implant having posterior bendable optic
US7044597B2 (en) 2003-12-16 2006-05-16 Bausch & Lomb Incorporated Multifocal contact lens and method of manufacture thereof
US7776086B2 (en) 2004-04-30 2010-08-17 Revision Optics, Inc. Aspherical corneal implant
US8057541B2 (en) 2006-02-24 2011-11-15 Revision Optics, Inc. Method of using small diameter intracorneal inlays to treat visual impairment
US10835371B2 (en) 2004-04-30 2020-11-17 Rvo 2.0, Inc. Small diameter corneal inlay methods
GB2430047B (en) 2004-07-01 2009-01-28 Auckland Uniservices Ltd Method of manufacturing a contact lens system for correcting myopic vision
US7097302B2 (en) * 2004-07-03 2006-08-29 Mcgregor Scott D Rigid gas permeable contact lens with 3-part curvature
US7025456B2 (en) * 2004-08-20 2006-04-11 Apollo Optical Systems, Llc Diffractive lenses for vision correction
US7156516B2 (en) * 2004-08-20 2007-01-02 Apollo Optical Systems Llc Diffractive lenses for vision correction
US7506983B2 (en) 2004-09-30 2009-03-24 The Hong Kong Polytechnic University Method of optical treatment
US7922326B2 (en) 2005-10-25 2011-04-12 Abbott Medical Optics Inc. Ophthalmic lens with multiple phase plates
EP2527908B1 (en) 2004-10-25 2019-03-20 Johnson & Johnson Surgical Vision, Inc. Ophthalmic lens with multiple phase plates
US8272734B2 (en) * 2004-11-16 2012-09-25 Essilor International, S.A. Non-progressive multifocal lens with large near/intermediate area
US20060103806A1 (en) * 2004-11-16 2006-05-18 Prio Corporation Non-progressive multi-focal lens with large near/intermediate area
US9636213B2 (en) 2005-09-30 2017-05-02 Abbott Medical Optics Inc. Deformable intraocular lenses and lens systems
US10555805B2 (en) 2006-02-24 2020-02-11 Rvo 2.0, Inc. Anterior corneal shapes and methods of providing the shapes
US8377125B2 (en) 2006-04-05 2013-02-19 Anew Optics, Inc. Intraocular lens with accommodation
AR062067A1 (es) 2006-07-17 2008-10-15 Novartis Ag Lentes de contacto toricas con perfil de potencia optica controlado
US7713299B2 (en) 2006-12-29 2010-05-11 Abbott Medical Optics Inc. Haptic for accommodating intraocular lens
US20080161914A1 (en) 2006-12-29 2008-07-03 Advanced Medical Optics, Inc. Pre-stressed haptic for accommodating intraocular lens
CA2674018C (en) 2006-12-29 2015-05-26 Advanced Medical Optics, Inc. Multifocal accommodating intraocular lens
KR101535311B1 (ko) 2007-03-09 2015-07-08 오클랜드 유니서비시즈 리미티드 콘택트 렌즈, 근시를 교정하는 방법 및 콘택트 렌즈를 생산하는 방법
US8162953B2 (en) 2007-03-28 2012-04-24 Revision Optics, Inc. Insertion system for corneal implants
US9549848B2 (en) 2007-03-28 2017-01-24 Revision Optics, Inc. Corneal implant inserters and methods of use
US9271828B2 (en) 2007-03-28 2016-03-01 Revision Optics, Inc. Corneal implant retaining devices and methods of use
FR2918557B1 (fr) * 2007-07-09 2009-10-02 Gilbert Cohen Lentille diffractive intracorneenne.
US20090157179A1 (en) * 2007-12-11 2009-06-18 Pinto Candido D Ophthalmic Lenses Providing an Extended Depth of Field
US8480734B2 (en) 2007-12-27 2013-07-09 Anew Optics, Inc. Intraocular lens with accommodation
US8034108B2 (en) 2008-03-28 2011-10-11 Abbott Medical Optics Inc. Intraocular lens having a haptic that includes a cap
US7753521B2 (en) * 2008-03-31 2010-07-13 Johnson & Johnson Vision Care, Inc. Lenses for the correction of presbyopia and methods of designing the lenses
US9539143B2 (en) 2008-04-04 2017-01-10 Revision Optics, Inc. Methods of correcting vision
CA2720573C (en) 2008-04-04 2019-08-13 Revision Optics, Inc. Corneal inlay design and methods of correcting vision
WO2010062972A1 (en) * 2008-11-26 2010-06-03 Anew Optics, Inc. Intraocular lens optic
CA2744859C (en) 2008-11-26 2015-11-24 Anew Optics, Inc. Haptic devices having an annular ribbon for intraocular lens
US10010405B2 (en) 2008-11-26 2018-07-03 Anew Aol Technologies, Inc. Haptic devices for intraocular lens
CA2766654C (en) 2009-06-26 2017-10-10 Abbott Medical Optics Inc. Accommodating intraocular lenses
AU2010279561B2 (en) 2009-08-03 2014-11-27 Johnson & Johnson Surgical Vision, Inc. Intraocular lens for providing accomodative vision
US8331048B1 (en) 2009-12-18 2012-12-11 Bausch & Lomb Incorporated Methods of designing lenses having selected depths of field
US8469948B2 (en) 2010-08-23 2013-06-25 Revision Optics, Inc. Methods and devices for forming corneal channels
RU2619654C2 (ru) 2011-10-21 2017-05-17 Ревижн Оптикс, Инк. Устройства для хранения и подачи имплантатов роговицы
TWI588560B (zh) 2012-04-05 2017-06-21 布萊恩荷登視覺協會 用於屈光不正之鏡片、裝置、方法及系統
US9084674B2 (en) 2012-05-02 2015-07-21 Abbott Medical Optics Inc. Intraocular lens with shape changing capability to provide enhanced accomodation and visual acuity
CA2883712A1 (en) 2012-08-31 2014-03-06 Amo Groningen B.V. Multi-ring lens, systems and methods for extended depth of focus
US9201250B2 (en) 2012-10-17 2015-12-01 Brien Holden Vision Institute Lenses, devices, methods and systems for refractive error
AU2013332247B2 (en) 2012-10-17 2018-11-29 Brien Holden Vision Institute Limited Lenses, devices, methods and systems for refractive error
SG11201707589SA (en) 2014-09-09 2017-10-30 Staar Surgical Co Ophthalmic implants with extended depth of field and enhanced distance visual acuity
WO2016144404A1 (en) 2015-03-12 2016-09-15 Revision Optics, Inc. Methods of correcting vision
CA3013858A1 (en) 2016-02-09 2017-08-17 Amo Groningen B.V. Progressive power intraocular lens, and methods of use and manufacture
JP6953423B2 (ja) 2016-03-09 2021-10-27 スター サージカル カンパニー 被写界深度延長及び遠見視力向上を伴う眼科インプラント
US11497599B2 (en) 2017-03-17 2022-11-15 Amo Groningen B.V. Diffractive intraocular lenses for extended range of vision
US11523897B2 (en) 2017-06-23 2022-12-13 Amo Groningen B.V. Intraocular lenses for presbyopia treatment
CA3068351A1 (en) 2017-06-28 2019-01-03 Amo Groningen B.V. Extended range and related intraocular lenses for presbyopia treatment
US11262598B2 (en) 2017-06-28 2022-03-01 Amo Groningen, B.V. Diffractive lenses and related intraocular lenses for presbyopia treatment
US11327210B2 (en) 2017-06-30 2022-05-10 Amo Groningen B.V. Non-repeating echelettes and related intraocular lenses for presbyopia treatment
US11707354B2 (en) 2017-09-11 2023-07-25 Amo Groningen B.V. Methods and apparatuses to increase intraocular lenses positional stability
JP7203223B2 (ja) 2018-08-17 2023-01-12 スター サージカル カンパニー 屈折率のナノ勾配を示すポリマー組成物
CN115380239A (zh) 2019-12-30 2022-11-22 阿莫格罗宁根私营有限公司 用于视力治疗的具有不规则宽度的衍射轮廓的镜片
CN114911072A (zh) * 2021-02-09 2022-08-16 晶硕光学股份有限公司 智能多焦点镜片及多焦点散光镜片

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324461A (en) * 1979-11-26 1982-04-13 Salvatori Ophthalmics, Inc. Contact lens for non-rotational orientation
US4580882A (en) * 1983-04-21 1986-04-08 Benjamin Nuchman Continuously variable contact lens
JPS63253474A (ja) * 1987-04-10 1988-10-20 Minolta Camera Co Ltd 光線追跡装置
US5056908A (en) * 1987-11-12 1991-10-15 Cohen Allen L Optic zone phase channels
US4932970A (en) * 1988-05-17 1990-06-12 Allergan, Inc. Ophthalmic lens
GB8829819D0 (en) * 1988-12-21 1989-02-15 Freeman Michael H Lenses and mirrors
FR2642855B1 (fr) * 1989-02-06 1991-05-17 Essilor Int Lentille optique pour la correction de l'astigmatisme
WO1991009336A1 (en) * 1989-12-07 1991-06-27 Leonard Seidner Corneal contact lenses
US5002382A (en) * 1989-12-07 1991-03-26 Leonard Seidner Multifocal corneal contact lenses
US5020898A (en) * 1990-01-29 1991-06-04 Schering Corporation Contact lens for correction of astigmatism
US5050981A (en) * 1990-07-24 1991-09-24 Johnson & Johnson Vision Products, Inc. Lens design method and resulting aspheric lens
US5229797A (en) * 1990-08-08 1993-07-20 Minnesota Mining And Manufacturing Company Multifocal diffractive ophthalmic lenses
US5112351A (en) * 1990-10-12 1992-05-12 Ioptex Research Inc. Multifocal intraocular lenses
US5198844A (en) * 1991-07-10 1993-03-30 Johnson & Johnson Vision Products, Inc. Segmented multifocal contact lens
US5786883A (en) * 1991-11-12 1998-07-28 Pilkington Barnes Hind, Inc. Annular mask contact lenses
AU5127393A (en) * 1992-10-02 1994-04-26 Nestle S.A. Intraocular lens system
US5448312A (en) * 1992-12-09 1995-09-05 Johnson & Johnson Vision Products, Inc. Pupil-tuned multifocal ophthalmic lens
NZ250359A (en) * 1992-12-09 1996-07-26 Johnson & Johnson Vision Prod Multifocal ophthalmic lens pair
GB9306424D0 (en) * 1993-03-27 1993-05-19 Pilkington Visioncare Inc Contact lens designed to accommodate and correct for the effects of presbyopia
CA2096706A1 (en) * 1993-05-20 1994-11-21 Robert Mercure Soft toric lens for correction of astigmatism
US5652638A (en) * 1995-05-04 1997-07-29 Johnson & Johnson Vision Products, Inc. Concentric annular ring lens designs for astigmatism

Also Published As

Publication number Publication date
AU5206696A (en) 1996-11-14
SG47133A1 (en) 1998-03-20
EP0742463A2 (en) 1996-11-13
BR9602156A (pt) 1997-12-30
HUP9601155A2 (en) 1997-08-28
HU9601160D0 (en) 1996-06-28
CA2175654C (en) 2007-03-20
CN1166609A (zh) 1997-12-03
US5847802A (en) 1998-12-08
KR960040327A (ko) 1996-12-17
JPH0947462A (ja) 1997-02-18
CA2175654A1 (en) 1996-11-05
CN1071903C (zh) 2001-09-26
HUP9601160A2 (en) 1997-01-28
AU706878B2 (en) 1999-06-24
EP0742463A3 (en) 1998-11-04
JP4183772B2 (ja) 2008-11-19
NZ286485A (en) 1998-07-28
EP0742463B1 (en) 2005-04-20
DE69634622D1 (de) 2005-05-25
HU9601126D0 (en) 1996-06-28
NO961806L (no) 1996-11-05
DE69634622T2 (de) 2006-03-02
TW317612B (hu) 1997-10-11
ZA963532B (en) 1997-11-03
ATE293802T1 (de) 2005-05-15
HUP9601126A3 (en) 1999-10-28
MX9601668A (es) 1997-07-31
IL118064A0 (en) 1996-08-04
NO961806D0 (no) 1996-05-03
HU9601155D0 (en) 1996-06-28

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