GB782295A - Improvements in or relating to light transmitting elements for use in gonioscopy - Google Patents

Improvements in or relating to light transmitting elements for use in gonioscopy

Info

Publication number
GB782295A
GB782295A GB974955A GB974955A GB782295A GB 782295 A GB782295 A GB 782295A GB 974955 A GB974955 A GB 974955A GB 974955 A GB974955 A GB 974955A GB 782295 A GB782295 A GB 782295A
Authority
GB
United Kingdom
Prior art keywords
eye
angle
axis
cornea
april
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
GB974955A
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.)
CLEMENT CLARKE Ltd
EDGAR FRANK FINCHAM
JOHN HATHERLEY DOBREE
Original Assignee
CLEMENT CLARKE Ltd
EDGAR FRANK FINCHAM
JOHN HATHERLEY DOBREE
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 CLEMENT CLARKE Ltd, EDGAR FRANK FINCHAM, JOHN HATHERLEY DOBREE filed Critical CLEMENT CLARKE Ltd
Priority to GB974955A priority Critical patent/GB782295A/en
Publication of GB782295A publication Critical patent/GB782295A/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
    • A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes

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

782,295. Eye examining apparatus. CLARKE, Ltd., C., FINCHAM, E. F., and DOBREE, J. H. April 4, 1956 [April 4, 1955], No. 9749/55. Class 97(1) A gonioscopic element for use in the ex- :amination of the angle D<SP>1</SP> of the anterior chamber D of the human eye, has a concave boundary surface A<SP>1</SP> substantially shaped to fit the cornea B of the eye and plane reflecting surfaces E<SP>1</SP>, F<SP>1</SP> inclined to one another at an angle between 25 and 37¢ degrees and arranged so that, when the element is placed upon the cornea, the surface E<SP>1</SP> makes an angle not greater than 10 degrees with the axis of the eye, the surface F<SP>1</SP> cuts such axis and a principal ray C from the angle D<SP>1</SP> of the eye will be transmitted by the contacting surfaces A' and B and successively reflected by the surfaces E<SP>1</SP>, F<SP>1</SP> to emerge approximately in line with the axis of the eye. The element may be formed by a single block of transparent material mounted in a holder G, the surface E<SP>1</SP> being coated to be reflecting. Alternatively the surface A<SP>1</SP> may be provided as a thin member closing the end of the holder G which supports the plane reflectors E<SP>1</SP> and F<SP>1</SP>. The element may be used with a slit lamp apparatus.
GB974955A 1955-04-04 1955-04-04 Improvements in or relating to light transmitting elements for use in gonioscopy Expired GB782295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB974955A GB782295A (en) 1955-04-04 1955-04-04 Improvements in or relating to light transmitting elements for use in gonioscopy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB974955A GB782295A (en) 1955-04-04 1955-04-04 Improvements in or relating to light transmitting elements for use in gonioscopy

Publications (1)

Publication Number Publication Date
GB782295A true GB782295A (en) 1957-09-04

Family

ID=9878025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB974955A Expired GB782295A (en) 1955-04-04 1955-04-04 Improvements in or relating to light transmitting elements for use in gonioscopy

Country Status (1)

Country Link
GB (1) GB782295A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954721A (en) * 1957-10-09 1960-10-04 Austin P Voelker Optical inspection instrument
US4033679A (en) * 1975-12-10 1977-07-05 Walter Sussman Gonioscope
DE3040214A1 (en) * 1980-10-24 1982-05-13 Optische Werke G. Rodenstock, 8000 München DOUBLE MIRROR CONTACT GLASS
EP0293169A1 (en) * 1987-05-26 1988-11-30 Alcoholism And Drug Addiction Research Foundation Method and means for detecting alcohol levels in humans
EP1889566A1 (en) * 2006-08-18 2008-02-20 Ocular Instruments, Inc. Direct view gonio lens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954721A (en) * 1957-10-09 1960-10-04 Austin P Voelker Optical inspection instrument
US4033679A (en) * 1975-12-10 1977-07-05 Walter Sussman Gonioscope
DE3040214A1 (en) * 1980-10-24 1982-05-13 Optische Werke G. Rodenstock, 8000 München DOUBLE MIRROR CONTACT GLASS
EP0293169A1 (en) * 1987-05-26 1988-11-30 Alcoholism And Drug Addiction Research Foundation Method and means for detecting alcohol levels in humans
EP1889566A1 (en) * 2006-08-18 2008-02-20 Ocular Instruments, Inc. Direct view gonio lens
US7419262B2 (en) 2006-08-18 2008-09-02 Ocular Instruments, Inc. Direct view gonio lens

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