DE29800912U1 - Anordnung zur Bestimmung der subjektiven Refraktion - Google Patents

Anordnung zur Bestimmung der subjektiven Refraktion

Info

Publication number
DE29800912U1
DE29800912U1 DE29800912U DE29800912U DE29800912U1 DE 29800912 U1 DE29800912 U1 DE 29800912U1 DE 29800912 U DE29800912 U DE 29800912U DE 29800912 U DE29800912 U DE 29800912U DE 29800912 U1 DE29800912 U1 DE 29800912U1
Authority
DE
Germany
Prior art keywords
determining
arrangement
subjective refraction
subjective
refraction
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 - Lifetime
Application number
DE29800912U
Other languages
English (en)
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.)
BLOCK AUGENOPTISCHE und OPHTHA
Original Assignee
BLOCK AUGENOPTISCHE und OPHTHA
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 BLOCK AUGENOPTISCHE und OPHTHA filed Critical BLOCK AUGENOPTISCHE und OPHTHA
Priority to DE29800912U priority Critical patent/DE29800912U1/de
Publication of DE29800912U1 publication Critical patent/DE29800912U1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • 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)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
DE29800912U 1997-02-21 1998-01-21 Anordnung zur Bestimmung der subjektiven Refraktion Expired - Lifetime DE29800912U1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29800912U DE29800912U1 (de) 1997-02-21 1998-01-21 Anordnung zur Bestimmung der subjektiven Refraktion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29703127U DE29703127U1 (de) 1997-02-21 1997-02-21 Anordnung zur Bestimmung der subjektiven Refraktion
DE29800912U DE29800912U1 (de) 1997-02-21 1998-01-21 Anordnung zur Bestimmung der subjektiven Refraktion

Publications (1)

Publication Number Publication Date
DE29800912U1 true DE29800912U1 (de) 1998-03-05

Family

ID=8036343

Family Applications (2)

Application Number Title Priority Date Filing Date
DE29703127U Expired - Lifetime DE29703127U1 (de) 1997-02-21 1997-02-21 Anordnung zur Bestimmung der subjektiven Refraktion
DE29800912U Expired - Lifetime DE29800912U1 (de) 1997-02-21 1998-01-21 Anordnung zur Bestimmung der subjektiven Refraktion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE29703127U Expired - Lifetime DE29703127U1 (de) 1997-02-21 1997-02-21 Anordnung zur Bestimmung der subjektiven Refraktion

Country Status (1)

Country Link
DE (2) DE29703127U1 (de)

Also Published As

Publication number Publication date
DE29703127U1 (de) 1997-04-10

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19980416

R409 Internal rectification of the legal status completed
R150 Term of protection extended to 6 years

Effective date: 20010529

R157 Lapse of ip right after 6 years

Effective date: 20040803

R157 Lapse of ip right after 6 years

Effective date: 20080201