DE4021092C2 - Vorrichtung zur subjektiven Augenrefraktion - Google Patents

Vorrichtung zur subjektiven Augenrefraktion

Info

Publication number
DE4021092C2
DE4021092C2 DE19904021092 DE4021092A DE4021092C2 DE 4021092 C2 DE4021092 C2 DE 4021092C2 DE 19904021092 DE19904021092 DE 19904021092 DE 4021092 A DE4021092 A DE 4021092A DE 4021092 C2 DE4021092 C2 DE 4021092C2
Authority
DE
Germany
Prior art keywords
eye
refraction
convergence
optotype
motor
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.)
Expired - Fee Related
Application number
DE19904021092
Other languages
German (de)
English (en)
Other versions
DE4021092A1 (de
Inventor
Takashi Ozawa
Toshihiro Koyama
Yoshinori Oana
Hidenori Honna
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.)
Topcon Corp
Original Assignee
Topcon Corp
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 Topcon Corp filed Critical Topcon Corp
Publication of DE4021092A1 publication Critical patent/DE4021092A1/de
Application granted granted Critical
Publication of DE4021092C2 publication Critical patent/DE4021092C2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
DE19904021092 1989-07-04 1990-07-03 Vorrichtung zur subjektiven Augenrefraktion Expired - Fee Related DE4021092C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7886889U JPH0316903U (enrdf_load_stackoverflow) 1989-07-04 1989-07-04

Publications (2)

Publication Number Publication Date
DE4021092A1 DE4021092A1 (de) 1991-01-17
DE4021092C2 true DE4021092C2 (de) 1998-09-10

Family

ID=13673802

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904021092 Expired - Fee Related DE4021092C2 (de) 1989-07-04 1990-07-03 Vorrichtung zur subjektiven Augenrefraktion

Country Status (2)

Country Link
JP (1) JPH0316903U (enrdf_load_stackoverflow)
DE (1) DE4021092C2 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220000359A1 (en) * 2020-07-01 2022-01-06 Zaaf Science Group LLC Automated refraction examination system
US20220000360A1 (en) * 2020-07-01 2022-01-06 Zaaf Science Group LLC Method and system for performing intelligent refractive errors diagnosis

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3599530B2 (ja) * 1997-06-30 2004-12-08 株式会社ニデック 検眼装置
JP3935838B2 (ja) * 2002-12-26 2007-06-27 株式会社ニデック 検眼装置
JP2017060896A (ja) * 2017-01-13 2017-03-30 株式会社トプコン 自覚式検眼装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR446969A (fr) * 1912-08-07 1912-12-19 George Adelmer Rogers Instruments d'optique pour oculistes
US1236777A (en) * 1912-09-05 1917-08-14 G W Shook Optical Company Optical instrument.
US1945940A (en) * 1932-01-04 1934-02-06 Aaron S Green Ophthalmological instrument
US2282494A (en) * 1940-05-03 1942-05-12 Potter Jack Arthur Illumination control for vision-test charts
US2441783A (en) * 1945-04-16 1948-05-18 Frank J Williams Optometrical testing device
DE1756901U (de) * 1957-09-18 1957-11-28 Optische Werk G Rodenstock Optometer.
US2923200A (en) * 1956-03-29 1960-02-02 American Optical Corp Eye testing instruments
FR1526420A (fr) * 1967-05-22 1968-05-24 Rodenstock Optik G Appareil binoculaire pour l'examen de la vue
US4496226A (en) * 1981-07-22 1985-01-29 Bausch & Lomb Incorporated ANDed motor control system for motorized ophthalmic instrument
US4537480A (en) * 1982-06-25 1985-08-27 Hoya Lens Corporation Motor-driven subjective phorometer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6317455A (ja) * 1986-07-09 1988-01-25 Fuji Photo Film Co Ltd 感光性平版印刷版の現像補充液補充方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR446969A (fr) * 1912-08-07 1912-12-19 George Adelmer Rogers Instruments d'optique pour oculistes
US1236777A (en) * 1912-09-05 1917-08-14 G W Shook Optical Company Optical instrument.
US1945940A (en) * 1932-01-04 1934-02-06 Aaron S Green Ophthalmological instrument
US2282494A (en) * 1940-05-03 1942-05-12 Potter Jack Arthur Illumination control for vision-test charts
US2441783A (en) * 1945-04-16 1948-05-18 Frank J Williams Optometrical testing device
US2923200A (en) * 1956-03-29 1960-02-02 American Optical Corp Eye testing instruments
DE1756901U (de) * 1957-09-18 1957-11-28 Optische Werk G Rodenstock Optometer.
FR1526420A (fr) * 1967-05-22 1968-05-24 Rodenstock Optik G Appareil binoculaire pour l'examen de la vue
US4496226A (en) * 1981-07-22 1985-01-29 Bausch & Lomb Incorporated ANDed motor control system for motorized ophthalmic instrument
US4537480A (en) * 1982-06-25 1985-08-27 Hoya Lens Corporation Motor-driven subjective phorometer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REINER, J.: Ein neuer Phoropter für Fern- und Nahbrillenbestimmung, In: Sonderdruck aus dem Sitzungsbericht der 109. Versammlung des Vereins Rheinisch-Westfälischer Augenärzte, 1964, S. 3-11 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220000359A1 (en) * 2020-07-01 2022-01-06 Zaaf Science Group LLC Automated refraction examination system
US20220000360A1 (en) * 2020-07-01 2022-01-06 Zaaf Science Group LLC Method and system for performing intelligent refractive errors diagnosis

Also Published As

Publication number Publication date
DE4021092A1 (de) 1991-01-17
JPH0316903U (enrdf_load_stackoverflow) 1991-02-20

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee