GB333925A - Improvements relating to ophthalmoscopes or other similar projecting instruments - Google Patents

Improvements relating to ophthalmoscopes or other similar projecting instruments

Info

Publication number
GB333925A
GB333925A GB1266629A GB1266629A GB333925A GB 333925 A GB333925 A GB 333925A GB 1266629 A GB1266629 A GB 1266629A GB 1266629 A GB1266629 A GB 1266629A GB 333925 A GB333925 A GB 333925A
Authority
GB
United Kingdom
Prior art keywords
ophthalmoscopes
instruments
improvements relating
similar projecting
projecting
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
Application number
GB1266629A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1266629A priority Critical patent/GB333925A/en
Publication of GB333925A publication Critical patent/GB333925A/en
Expired 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
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
    • A61B3/1208—Multiple lens hand-held instruments

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)
  • Microscoopes, Condenser (AREA)

Abstract

333,925. Keeler, C. H. April 24, 1929. Ophthalmoscopes are provided with a revolving member g carrying several objects in contact with or adjacent to the condenser lenses, so that they may be projected into the observed plane by the adjustable lens j. The rotation of the member g brings the desired object into the line of illumination by the lamp f. A cover glass o is fitted to the casing l.
GB1266629A 1929-04-24 1929-04-24 Improvements relating to ophthalmoscopes or other similar projecting instruments Expired GB333925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1266629A GB333925A (en) 1929-04-24 1929-04-24 Improvements relating to ophthalmoscopes or other similar projecting instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1266629A GB333925A (en) 1929-04-24 1929-04-24 Improvements relating to ophthalmoscopes or other similar projecting instruments

Publications (1)

Publication Number Publication Date
GB333925A true GB333925A (en) 1930-08-25

Family

ID=10008890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266629A Expired GB333925A (en) 1929-04-24 1929-04-24 Improvements relating to ophthalmoscopes or other similar projecting instruments

Country Status (1)

Country Link
GB (1) GB333925A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707901A (en) * 1951-06-22 1955-05-10 American Optical Corp Optical diagnostic instruments
US2902899A (en) * 1954-08-31 1959-09-08 Oculus Optikgerate G M B H Ophthalmological hand instrument for the examination of the retina of the eye
GB2359375A (en) * 2000-02-15 2001-08-22 Ian Marshall Ophthalmoscope optical system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707901A (en) * 1951-06-22 1955-05-10 American Optical Corp Optical diagnostic instruments
US2902899A (en) * 1954-08-31 1959-09-08 Oculus Optikgerate G M B H Ophthalmological hand instrument for the examination of the retina of the eye
GB2359375A (en) * 2000-02-15 2001-08-22 Ian Marshall Ophthalmoscope optical system
GB2359375B (en) * 2000-02-15 2002-05-22 Ian Marshall Ophthalmoscope optical system

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