CA2352148A1 - Eye viewing device for retinal viewing through undilated pupil - Google Patents

Eye viewing device for retinal viewing through undilated pupil Download PDF

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Publication number
CA2352148A1
CA2352148A1 CA002352148A CA2352148A CA2352148A1 CA 2352148 A1 CA2352148 A1 CA 2352148A1 CA 002352148 A CA002352148 A CA 002352148A CA 2352148 A CA2352148 A CA 2352148A CA 2352148 A1 CA2352148 A1 CA 2352148A1
Authority
CA
Canada
Prior art keywords
viewing
retinal
undilated pupil
eye
undilated
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002352148A
Other languages
French (fr)
Other versions
CA2352148C (en
Inventor
Ervin Goldfain
William Lagerway
Chris R. Roberts
Steven R. Slawson
Allan I. Krauter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Welch Allyn Inc
Original Assignee
Welch Allyn, Inc.
Ervin Goldfain
William Lagerway
Chris R. Roberts
Steven R. Slawson
Allan I. Krauter
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
Priority claimed from US09/198,545 external-priority patent/US6065837A/en
Priority claimed from US09/444,161 external-priority patent/US6409341B1/en
Application filed by Welch Allyn, Inc., Ervin Goldfain, William Lagerway, Chris R. Roberts, Steven R. Slawson, Allan I. Krauter filed Critical Welch Allyn, Inc.
Publication of CA2352148A1 publication Critical patent/CA2352148A1/en
Application granted granted Critical
Publication of CA2352148C publication Critical patent/CA2352148C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/14Arrangements specially adapted for eye photography
    • A61B3/15Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
    • A61B3/156Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
    • A61B3/158Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking of corneal reflection

Abstract

The invention is a low cost, low input power eye viewing device well suited for viewing wide field retinal images through an undilated pupil. Included in the device are a converging light illumination system and an aperture stop. The converging light illumination system provides ease of entry of light rays into an eye, wide field retinal illumination, reduced glare and reduced power consumption. The aperture stop blocks unwanted received glare light not forming part of the retinal image. The device is made especially well suited for retinal viewing through an undilated pupil if the aperture is sized in accordance with the diameter of an undilated pupil.
CA002352148A 1998-11-24 1999-11-23 Eye viewing device for retinal viewing through undilated pupil Expired - Fee Related CA2352148C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US09/198,545 US6065837A (en) 1998-11-24 1998-11-24 Ophthalmoscope comprising defocused light source
US09/198,545 1998-11-24
US28130099A 1999-11-22 1999-11-22
US09/444,161 US6409341B1 (en) 1998-11-24 1999-11-22 Eye viewing device for retinal viewing through undilated pupil
US09/444,161 1999-11-22
PCT/US1999/027857 WO2000030527A1 (en) 1998-11-24 1999-11-23 Eye viewing device for retinal viewing through undilated pupil

Publications (2)

Publication Number Publication Date
CA2352148A1 true CA2352148A1 (en) 2000-06-02
CA2352148C CA2352148C (en) 2008-01-15

Family

ID=26893894

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002352148A Expired - Fee Related CA2352148C (en) 1998-11-24 1999-11-23 Eye viewing device for retinal viewing through undilated pupil

Country Status (9)

Country Link
US (2) US6527390B2 (en)
EP (1) EP1152687B1 (en)
JP (1) JP3905312B2 (en)
CN (1) CN1157153C (en)
AT (1) ATE274833T1 (en)
AU (1) AU768276B2 (en)
CA (1) CA2352148C (en)
DE (1) DE69919902T2 (en)
WO (1) WO2000030527A1 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637882B1 (en) * 1998-11-24 2003-10-28 Welch Allyn, Inc. Eye viewing device for retinal viewing through undilated pupil
US6718103B2 (en) * 2000-04-17 2004-04-06 Vertical Computer Systems, Inc. Apparatus and method for transmitting images over a single-filament fiber optic cable
CN1447146A (en) * 2002-03-26 2003-10-08 株式会社拓普康 Operation microscope
GB2387663B (en) 2002-04-17 2005-10-12 Roger Hanif Armour Ophthalmoscope
JP3931139B2 (en) * 2002-12-27 2007-06-13 興和株式会社 Ophthalmic imaging equipment
JP4047217B2 (en) * 2003-05-01 2008-02-13 キヤノン株式会社 Ophthalmic equipment
AU2003903157A0 (en) * 2003-06-20 2003-07-03 The Lions Eye Institute of Western Australia Incorporated The Ophthalmic camera and ophthalmic camera adaptor
DE10347732B4 (en) * 2003-10-14 2019-10-17 Carl Zeiss Meditec Ag Lighting device and surgical microscope and their use
GB0324526D0 (en) * 2003-10-21 2003-11-26 Armour Roger H Ophthalmoscope
US7364297B2 (en) * 2003-10-28 2008-04-29 Welch Allyn, Inc. Digital documenting ophthalmoscope
US7708403B2 (en) 2003-10-30 2010-05-04 Welch Allyn, Inc. Apparatus and method for diagnosis of optically identifiable ophthalmic conditions
US7338167B2 (en) 2003-12-10 2008-03-04 Joslin Diabetes Center, Inc. Retinal imaging system
US20050285056A1 (en) * 2004-06-11 2005-12-29 Smith Adlai H Process for manufacture of semiconductor chips utilizing a posteriori corrections to machine control system and settings
US20070156021A1 (en) * 2005-09-14 2007-07-05 Bradford Morse Remote imaging apparatus having an adaptive lens
US8027095B2 (en) * 2005-10-11 2011-09-27 Hand Held Products, Inc. Control systems for adaptive lens
US20080145127A1 (en) * 2006-10-10 2008-06-19 Hang Yu Liu Book-shaped, back-typing, ergonomic computer keyboard
DE102009024942A1 (en) * 2009-06-09 2010-12-23 Carl Zeiss Surgical Gmbh Light source arrangement for a lighting device of a medical-optical observation device
US8786210B2 (en) 2010-06-30 2014-07-22 Welch Allyn, Inc. Drive circuit for light emitting diode
FI126159B (en) * 2010-09-22 2016-07-29 Optomed Oy survey Instruments
CN102525404B (en) * 2010-11-05 2015-09-30 尼德克株式会社 Ophthalmoligic instrument
DE102011085527B4 (en) * 2011-10-31 2019-01-17 Leica Microsystems (Schweiz) Ag Illumination device for a stereomicroscope, in particular a surgical microscope
US8944596B2 (en) 2011-11-09 2015-02-03 Welch Allyn, Inc. Digital-based medical devices
US9060718B2 (en) 2012-02-13 2015-06-23 Massachusetts Institute Of Technology Methods and apparatus for retinal imaging
US9179840B2 (en) * 2012-03-17 2015-11-10 Visunex Medical Systems Co. Ltd. Imaging and lighting optics of a contact eye camera
FI125445B (en) * 2012-09-12 2015-10-15 Trividi Oy Blick Control Device
US10078226B2 (en) 2013-10-14 2018-09-18 Welch Allyn, Inc. Portable eye viewing device enabled for enhanced field of view
CN104523221A (en) * 2014-12-17 2015-04-22 严俊文 Eye ground camera imaging system based on liquid lens focusing
JP6862086B2 (en) * 2015-12-02 2021-04-21 興和株式会社 Eye device
JP6874832B2 (en) * 2017-04-28 2021-05-19 株式会社ニコン Ophthalmic imaging optical system, ophthalmic imaging device, ophthalmic image acquisition method and ophthalmic image system
US10585291B2 (en) * 2017-04-28 2020-03-10 Yonatan Gerlitz Eye safety system for lasers
US11147441B2 (en) 2018-01-16 2021-10-19 Welch Allyn, Inc. Physical assessment device
US11202567B2 (en) * 2018-07-16 2021-12-21 Verily Life Sciences Llc Retinal camera with light baffle and dynamic illuminator for expanding eyebox

Family Cites Families (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3586424A (en) * 1968-09-13 1971-06-22 American Optical Corp Monocular indirect ophthalmoscope
US3638641A (en) 1969-11-19 1972-02-01 Arcoa Inc Multiphasic medical examinations screening laboratory construction
US3600098A (en) * 1969-12-29 1971-08-17 Bausch & Lomb Optical alignment method and apparatus
US3614214A (en) 1970-09-09 1971-10-19 Stanford Research Inst Method and system for taking photographs of an eye fundus
US3698099A (en) 1971-01-29 1972-10-17 American Optical Corp Ophthalmoscopes
JPS5225252B2 (en) 1972-09-16 1977-07-06
US4265519A (en) 1972-09-25 1981-05-05 Retina Foundation Wide-angle ophthalmoscope
US3944341A (en) 1972-09-25 1976-03-16 Retina Foundation Wide-angle ophthalmoscope and fundus camera
JPS49136227U (en) 1973-03-22 1974-11-22
JPS5713294B2 (en) 1973-03-31 1982-03-16
US3893447A (en) 1973-06-04 1975-07-08 Univ Johns Hopkins Simultaneous angiography of the separate retinal and choroidal circulations
US4023189A (en) 1974-03-29 1977-05-10 Varian Associates Wide angle fundus illumination and photography apparatus
JPS5343277B2 (en) 1974-06-19 1978-11-17
US3915564A (en) 1974-09-12 1975-10-28 Zeiss Stiftung Retinal image-display system
US4135791A (en) 1974-12-02 1979-01-23 Varian Associates, Inc. Reduced glare scanner
US4026638A (en) 1974-12-02 1977-05-31 Varian Associates Reduced glare scanner
US4068932A (en) 1975-05-23 1978-01-17 Canon Kabushiki Kaisha Optical instrument for examining the eye fundus
US4102563A (en) 1975-12-01 1978-07-25 Canon Kabushiki Kaisha Eye fundus camera free from undesired reflected and diffused light beams
JPS6057853B2 (en) 1975-12-08 1985-12-17 キヤノン株式会社 fundus camera
JPS5282246A (en) 1975-12-27 1977-07-09 Olympus Optical Co Ltd Light source device
JPS52108123A (en) 1976-03-09 1977-09-10 Canon Inc Ophthalmofundus camera
US4198144A (en) 1976-04-01 1980-04-15 Canon Kabushiki Kaisha Eye fundus camera
US4201456A (en) 1976-04-22 1980-05-06 Wolbarsht Myron L Method and apparatus for detecting the focusing condition of an optical system
JPS52141094A (en) 1976-05-19 1977-11-25 Canon Kk Dental wide angle objective lens
JPS52150645A (en) 1976-06-09 1977-12-14 Canon Inc Objective lens for opthalmology
US4095379A (en) 1976-07-19 1978-06-20 Joel Weintraub Multi-examining space arrangement for a rotatable ophthalmic table or the like
US4196979A (en) 1976-10-16 1980-04-08 Canon Kabushiki Kaisha Method and device for detecting distance between eye-examining instrument and eye
US4187014A (en) 1977-01-29 1980-02-05 Tokyo Kogaku Kikai Kabushiki Kaisha Eye fundus camera
JPS5843090B2 (en) * 1977-04-12 1983-09-24 キヤノン株式会社 Ophthalmological device with adjustment system
US4253743A (en) 1977-05-17 1981-03-03 Canon Kabushiki Kaisha Eye testing instrument
JPS53144192A (en) 1977-05-19 1978-12-15 Canon Kk Ophthalmolgic decice
JPS53144193A (en) 1977-05-20 1978-12-15 Canon Kk Ophthalmologic machine having operating distance detector
JPS5412194A (en) 1977-06-29 1979-01-29 Canon Kk Ophthalmologic instrument
US4265518A (en) 1977-06-30 1981-05-05 Canon Kabushiki Kaisha Variable magnification apparatus having illumination compensating ability
JPS5418190A (en) 1977-07-11 1979-02-09 Canon Kk Eyeeground observing camera
JPS5430695A (en) 1977-08-09 1979-03-07 Canon Kk Variable angular ophthalmologic device
DE2741992C3 (en) 1977-09-17 1980-10-30 Fa. Carl Zeiss, 7920 Heidenheim Ophthalmological device for examination and photographic fundus
DE2744707C3 (en) 1977-10-05 1980-07-24 Fa. Carl Zeiss, 7920 Heidenheim Ophthalmological device for stereoscopic examination and photographic fundus
DE2843287A1 (en) 1977-10-05 1979-04-19 Canon Kk EYE EXAMINATION INSTRUMENT
JPS6054053B2 (en) 1977-11-15 1985-11-28 ミノルタ株式会社 Fundus camera for easy pupil alignment
JPS5491997A (en) 1977-12-28 1979-07-20 Nippon Chemical Ind Optical system for correcting visual power with internal focus
US4184752A (en) 1978-04-07 1980-01-22 American Optical Corporation Instrument illuminator
DE2915639C2 (en) 1978-04-19 1988-06-16 Canon K.K., Tokio/Tokyo Eye examination device for examining the fundus
JPS54141095A (en) 1978-04-25 1979-11-01 Canon Kk Ophthalmologic camera
US4235540A (en) 1978-05-10 1980-11-25 Tokyo Kogaku Kikai Kabushiki Kaisha Eye fundus camera having variable power photographing optical system
JPS54147690A (en) 1978-05-12 1979-11-19 Minolta Camera Kk Eyeground photometry optical system
JPS6051094B2 (en) 1978-08-15 1985-11-12 キヤノン株式会社 Optical system with movable focusing lens group
US4238142A (en) 1978-12-18 1980-12-09 American Optical Corporation Method and apparatus for examining and photographing the ocular fundus
US4257691A (en) 1979-01-05 1981-03-24 Brooks Philip A Line of sight display apparatus
JPS55101241A (en) 1979-01-30 1980-08-01 Tokyo Optical Eyeground camera equipped with operation distance detector
JPS55106137A (en) 1979-02-09 1980-08-14 Tokyo Optical Counter photographing apparatus in fluorescence photograph eyeground camera
JPS55133239A (en) 1979-04-05 1980-10-16 Olympus Optical Co Microscope for blood vessel
US4249825A (en) 1979-05-14 1981-02-10 The Trustees Of Boston University Method and apparatus suitable for ocular blood flow analysis
JPS565637A (en) 1979-06-28 1981-01-21 Tokyo Optical Operation distance detector in ophthalmology machine
JPS5631732A (en) 1979-08-24 1981-03-31 Canon Kk Automatic focus adjusting camera
GB2061546B (en) 1979-09-13 1983-06-29 Konan Camera Res Inst Adaptor for use with ophthalmological microscope
JPS5691729A (en) 1979-12-25 1981-07-24 Nippon Chemical Ind Optical system for examinating and photographing eyeground
JPS56132936A (en) 1980-03-21 1981-10-17 Tokyo Optical Eye bottom camera
JPS56148337A (en) 1980-04-22 1981-11-17 Olympus Optical Co Eye bottom camera
JPS56151929A (en) 1980-04-25 1981-11-25 Canon Inc Fundus camera
JPS56166832A (en) 1980-05-08 1981-12-22 Olympus Optical Co Optical system of ophthalmic machine
JPS573622A (en) 1980-06-10 1982-01-09 Tokyo Optical Apparatus for detecting operation distance in ophthalmology
US4712894A (en) 1980-09-24 1987-12-15 Tokyo Kogaku Kikai Kabushiki Kaisha Ophthalmoscopic instrument having working position detecting means
JPS5772625A (en) 1980-09-24 1982-05-07 Tokyo Optical Ophthalmology machine equipped with apparatus for automatically detecting correct position of eye to be inspected
JPS5784036A (en) 1980-11-14 1982-05-26 Tokyo Optical Apparatus for detecting correct position in ophthalmic machine
JPS57125732A (en) 1981-01-29 1982-08-05 Tokyo Optical Apparatus for detecting focus position in ophthalmic machine
US4799783A (en) 1981-03-09 1989-01-24 Canon Kabushiki Kaisha Eye fundus camera
JPS57160430A (en) 1981-03-27 1982-10-02 Nippon Kogaku Kk Apparatus for observing eye bottom
US4469416A (en) 1981-04-24 1984-09-04 Tokyo Kogaku Kikai Kabushiki Kaisha Automatic focusing means for an ophthalmoscopic instrument
JPS57200126A (en) 1981-06-04 1982-12-08 Nippon Kogaku Kk Self-knowledge eye refractive force measuring apparatus
US4453808A (en) 1981-06-25 1984-06-12 Tokyo Kogaku Kikai Kabushiki Kaisha Apparatus for detecting the position of a patient's eye in ophthalmologic instruments
US4572627A (en) 1981-11-21 1986-02-25 Canon Kabushiki Kaisha Eye fundus camera
JPS58152535A (en) 1982-03-05 1983-09-10 キヤノン株式会社 Optical apparatus having focusing function
US4485820A (en) 1982-05-10 1984-12-04 The Johns Hopkins University Method and apparatus for the continuous monitoring of hemoglobin saturation in the blood of premature infants
US4464608A (en) 1982-09-13 1984-08-07 Warner Lambert Technologies, Inc. Circuit for controlling optical apparatus such as an ophthalmoscope
JPS5949738A (en) 1982-09-16 1984-03-22 株式会社トプコン Photographing mode change-over apparatus of eye bottom camera
JPS5949737A (en) 1982-09-16 1984-03-22 株式会社トプコン Illumination apparatus of eye bottom camera
JPS5953005U (en) 1982-09-28 1984-04-07 旭光学工業株式会社 Illumination optical axis adjustment mechanism of ophthalmoscope with imaging device
US4715703A (en) 1982-10-12 1987-12-29 Rodenstock Instrument Corporation Ocular-fundus analyzer
JPS59156324A (en) 1983-02-25 1984-09-05 株式会社トプコン Signal detector of ophthalmic machine
JPS59174144A (en) 1983-03-22 1984-10-02 キヤノン株式会社 Ophthalmic photographing apparatus
JPS59189826A (en) 1983-04-13 1984-10-27 株式会社トプコン Retinal camera
JPS6060831A (en) 1983-09-14 1985-04-08 株式会社トプコン Eyeground camera
JPS6066725A (en) 1983-09-20 1985-04-16 株式会社トプコン Opthalimic photographing apparatus
JPS6077737A (en) 1983-10-04 1985-05-02 株式会社トプコン Exposure controller of ophthalmic photographing apparatus
DE3339172A1 (en) 1983-10-28 1985-05-15 Fa. Carl Zeiss, 7920 Heidenheim LIGHT TRAP FOR EYE EXAMINATION DEVICES
JPS60137347A (en) 1983-12-27 1985-07-20 キヤノン株式会社 Automatic exposure amount control eyeground camera
US4682866A (en) * 1984-11-08 1987-07-28 David Volk Head-borne binocular indirect ophthalmoscope with integrated telescope
US4755043A (en) 1985-02-15 1988-07-05 Somec, Inc. Portable scanning digital pupillometer and method of use thereof
US4812033A (en) 1985-02-26 1989-03-14 Canon Kabushiki Kaisha Ophthalmic apparatus
US4732466A (en) 1985-04-04 1988-03-22 Humphrey Instruments, Inc. Fundus camera
US4717952A (en) 1985-06-14 1988-01-05 Canon Kabushiki Kaisha Medical television system
US4721378A (en) * 1985-09-24 1988-01-26 David Volk Condensing-image forming optical system for indirect ophthalmoscopy
US4755044A (en) 1986-01-06 1988-07-05 Massachusetts Institute Of Technology Remote ophthalmoscope and fundus photography unit
DE3608515A1 (en) * 1986-03-14 1987-09-24 Oculus Optikgeraete Gmbh OPTIONAL DEVICE FOR MICROSCOPE
US4998533A (en) 1986-07-15 1991-03-12 Winkelman James W Apparatus and method for in vivo analysis of red and white blood cell indices
US4991584A (en) 1986-10-25 1991-02-12 Canon Kabushiki Kaisha Ophthalmic examining apparatus and method capable of examining glaucoma
JP2561828B2 (en) 1987-01-26 1996-12-11 キヤノン株式会社 Fundus examination device
US4856891A (en) 1987-02-17 1989-08-15 Eye Research Institute Of Retina Foundation Eye fundus tracker/stabilizer
US4824238A (en) 1987-05-27 1989-04-25 George L. Spaeth Comparator for optic disc analysis and method of use thereof
US5037194A (en) 1988-05-31 1991-08-06 Canon Kabushiki Kaisha Ophthalmologic apparatus and method of compounding the image of an eye to be examined
US4927260A (en) 1988-10-11 1990-05-22 Orville Gordon Apparatus and method for the precision evaluation of visual function in the fovea centralis (macula) area of the retina
JP2927445B2 (en) 1989-04-14 1999-07-28 株式会社トプコン Stereoscopic fundus camera
US5216456A (en) * 1990-10-29 1993-06-01 Volk Donald A Optical device for use with a slit lamp biomicroscope
GB9323065D0 (en) * 1993-11-09 1994-01-05 Besca Ltd A wide field retinal scanning ophthalmoscope
DE29601263U1 (en) * 1996-01-25 1997-05-28 Moeller J D Optik Illumination device for a surgical microscope
US5873832A (en) * 1996-08-12 1999-02-23 Xeyex Corporation Method and apparatus for measuring properties of the eye using a virtual image
US6151167A (en) 1998-08-05 2000-11-21 Microvision, Inc. Scanned display with dual signal fiber transmission

Also Published As

Publication number Publication date
US6939006B2 (en) 2005-09-06
CN1157153C (en) 2004-07-14
ATE274833T1 (en) 2004-09-15
CN1328431A (en) 2001-12-26
DE69919902T2 (en) 2005-09-15
US20030098952A1 (en) 2003-05-29
JP3905312B2 (en) 2007-04-18
US20020089644A1 (en) 2002-07-11
WO2000030527A1 (en) 2000-06-02
DE69919902D1 (en) 2004-10-07
AU768276B2 (en) 2003-12-04
AU1633100A (en) 2000-06-13
US6527390B2 (en) 2003-03-04
JP2004500139A (en) 2004-01-08
CA2352148C (en) 2008-01-15
EP1152687A1 (en) 2001-11-14
EP1152687B1 (en) 2004-09-01
WO2000030527A8 (en) 2001-12-13

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