GB331862A - Improvements in ophthalmoscopes and like instruments - Google Patents

Improvements in ophthalmoscopes and like instruments

Info

Publication number
GB331862A
GB331862A GB1099129A GB1099129A GB331862A GB 331862 A GB331862 A GB 331862A GB 1099129 A GB1099129 A GB 1099129A GB 1099129 A GB1099129 A GB 1099129A GB 331862 A GB331862 A GB 331862A
Authority
GB
United Kingdom
Prior art keywords
ophthalmoscopes
lamp
instruments
apertures
retinoscope
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
GB1099129A
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.)
EDGAR FRANK FINCHAM
Original Assignee
EDGAR FRANK FINCHAM
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 EDGAR FRANK FINCHAM filed Critical EDGAR FRANK FINCHAM
Priority to GB1099129A priority Critical patent/GB331862A/en
Publication of GB331862A publication Critical patent/GB331862A/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)
  • Eye Examination Apparatus (AREA)

Abstract

331,862. Fincham, E. F., and Clarke, C. April 9, 1929. Ophthalmoscopes. - In an ophthalmoscope of the type adapted also for use as a retinoscope, the sight hole H in the inclined mirror F is situated near to, but not coincident with, the point on which the beam from the lamp A is projected. The result is that the axes of illumination and observation are inclined to one another and corneal reflections do not obstruct the view of the observer. A rotatable disc is mounted in the path of the rays from the lamp A and provided with slits, circular apertures, or colour filters for alternative use. Ventilating apertures M and passages are provided in the casings B, L.
GB1099129A 1929-04-09 1929-04-09 Improvements in ophthalmoscopes and like instruments Expired GB331862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1099129A GB331862A (en) 1929-04-09 1929-04-09 Improvements in ophthalmoscopes and like instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1099129A GB331862A (en) 1929-04-09 1929-04-09 Improvements in ophthalmoscopes and like instruments

Publications (1)

Publication Number Publication Date
GB331862A true GB331862A (en) 1930-07-09

Family

ID=9978033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1099129A Expired GB331862A (en) 1929-04-09 1929-04-09 Improvements in ophthalmoscopes and like instruments

Country Status (1)

Country Link
GB (1) GB331862A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469388A (en) * 1946-04-24 1949-05-10 American Cystoscope Makers Inc Multiple lens hand type ophthalmoscope
DE1194174B (en) * 1963-06-05 1965-06-03 Rodenstock Optik G Lighting device for ophthalmoscope
GB2499650A (en) * 2012-02-24 2013-08-28 Keeler Ltd Ophthalmic instrument with graticule
GB2505546A (en) * 2012-09-03 2014-03-05 Zumax Medical Co Ltd Retinoscope with condensing lens column

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469388A (en) * 1946-04-24 1949-05-10 American Cystoscope Makers Inc Multiple lens hand type ophthalmoscope
DE1194174B (en) * 1963-06-05 1965-06-03 Rodenstock Optik G Lighting device for ophthalmoscope
GB2499650A (en) * 2012-02-24 2013-08-28 Keeler Ltd Ophthalmic instrument with graticule
GB2499650B (en) * 2012-02-24 2018-04-25 Keeler Ltd Ophthalmic instrument
GB2505546A (en) * 2012-09-03 2014-03-05 Zumax Medical Co Ltd Retinoscope with condensing lens column

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