US3071040A - Eye testing perimeters - Google Patents

Eye testing perimeters Download PDF

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Publication number
US3071040A
US3071040A US679611A US67961157A US3071040A US 3071040 A US3071040 A US 3071040A US 679611 A US679611 A US 679611A US 67961157 A US67961157 A US 67961157A US 3071040 A US3071040 A US 3071040A
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United States
Prior art keywords
bowl
frame
spot
central axis
optical means
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Expired - Lifetime
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US679611A
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English (en)
Inventor
Jayle Gaetan Jean Edouard
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Individual
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Individual
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    • 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
    • A61B3/024—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types

Definitions

  • the present invention relates to ophthalmological apparatus for checking up the vision of a patient and in particular to perimeters, such apparatus comprising a bowl having an at least approximately part-spherical inner surface, the p-atients eye being located at the center of said surface and light projecting means capable of forming a luminous spot at any desired point on said surface.
  • the object of my invention is to provide an apparatus of this kind which is better adapted to meet the requirements of practice than those used up to this time.
  • said bowl is journalled about the central axis of said surface and may be rotated through suitable means about said axis, and the light projecting means are movably carried by said bowl and actuated through suitable means to displace said luminous spot on a given great circle of said spherical surface located in a plane passing through said central axis.
  • FIG. 1 is an elevational view partly in vertical section of a perimeter made according to my invention.
  • FIG. 2 is the corresponding perspective view.
  • the apparatus illustrated by the drawing comprises the following elements:
  • a bowl for instance having a hemispherical inner surface, at the center of which is placed the patients eye, said bowl being journalled in the apparatus frame F about an axis 2 passing through the central point 0 of said surface;
  • a light projecting device carried by bowl 1 and capable of forming on the inner surface thereof a luminous spot, said light projecting device including movable elements arranged in such manner that the luminous spot can be displaced on a given great circle of the spherical surface thereof located in a plane passing through said central point 0.
  • thisv light projecting means comprises a tube 33 having a light source therein, the tube having an end face 3 mounted at 45 from the vertical on the lower end of the tube.
  • the axis of the tube 33 passes through the center of spherical bowl 1 and the tube is mounted so as to be pivotable in casing 12 about said axis.
  • the tube 33 is rigid with a worm wheel 11 surrounding it and the worm wheel meshes with a worm 41 fixed on the shaft of motor 10.
  • a light source within tube 33 sends a light beam to form the luminous spot on the inner surface of bowl 1.
  • the source is mounted in a fixed position with respect to bowl 1 so that, when motor 10 rotates tube 33, the luminous spot formed by the beam from the tube 33 travels along the horizontal meridian circle shown in dotted lines in FIG. 1.
  • the movement of rotation of bowl 1 about axis 2 may be obtained through manually controlled means including for instance, as visible on FIG. 2, a cable 4 forming a loop wound on a grooved pulley 5 fixed with respect to bowl 1 and rotating about axis 2, said cable being mounted so that it cannot slip with respect to said pulley. Both of the ends of this cable are fixed to a nut 6 movable axially along a screw 7 on which it is screwed, said screw carrying an operating wheel 8 so as to be movable between two end positions limited by abutments 9 and corresponding to the maximum angular displacements of bowl 1 (for instance 180).
  • This system is combined with an observation device enabling the operator to follow on a frosted glass table 13 the displacements of another light spot emitted from a light projector 14 adapted to be moved with respect to said table with two elementary motions, that is to say a radial motion and an angular motion.
  • the displacements of this second mentioned luminous spot are controlled in such manner as to correspond to those of the luminous spot formed on bowl 1.
  • the indications given by the second spot on table 13 give exactly the position of the first light spot formed on bowl 1 with respect to the patients eye.
  • the light projector 14 is carried by an annular member 15 capable of rotating about an axis at right angles to table 13 and passing through the central point thereof.
  • this annular member 15 is mounted on a pulley 16.
  • the axis 2 of bowl 1 carries a pulley of the same diameter as pulley 16 (and which may be constituted by the above mentioned pulley 5) and pulleys 16 and 5 are coupled together by means of a semi-rigid cable 17 passing around said pulleys in such manner as to be unable to slip with respect thereto. Cable 17 passes on rollers 18, which permits its tension to be adjusted and to give table 13 the desired inclination.
  • projector 14 is mounted on a rod 19 extending along a diameter of annular member 15, said projector being always maintained in such position with respect to said rod that the beam it supplies is at right angles to table 13.
  • Projector 14 is fixed to the central portion of rod 19 and the ends of said rod are provided with two pistons (not visible on the drawing) slidable in receiver cylinders 20 and 21 carried by annular member 15 at the ends of a diameter thereof.
  • Said cylinders 20 and 21 are connected through conduit 24 with two power cylinders 22 and 23, the whole of said cylinders and said conduit being filled with a liquid so that the displacements of pistons slidable in power cylinders 22 and 23 are transmitted to the pistons slidable in cylinders 20 .not visible on'the drawing) are mounted at the ends of a controlling, through an electrical conductor 39, the motor 10 which controls the displacements of the light projecting device 3.
  • An ophthalmological apparatus which comprises, in combination, a frame, a bowl having an at least approximately hemi-spherical inner surface, said bowl being journalled in said frame about the central axis of said surface, the patients eye being located at the center of curvature of the hemi-spherical surface, means for rotating said bowl with respect to said frame about said central axis, first optical means including a light source movably carried by the edge of said bowl for projecting a luminous spot directly on the inner surface of said bowl at a point of a given great circle of said spherical surface located in a plane passing through said central axis, means carried by said bowl for actuating said first optical means to cause said luminous spot to be displaced on said circle, an observation table carried by said frame at a distance from said bowl, said table having a central point, second optical means movable with respect to said table for projecting a light spot on said table, first control means for moving said second optical means to displace said light spot on straight lines passing through said central
  • An ophthalmological apparatus which comprises, in combination, a frame, a bowl having an at least approximately hemi-spherical inner surface, said bowl being journalled in said frame about the central axis of said surface, the patients eye being located at the center of curvature of the hemi-sp'nerical surface, means for rotating said bowl with respect to said frame about said central axis, first optical means including a light source movably carried by the edge of said bowl for projecting a luminous spot directly on the inner surface of said bowl at a point of a given great circle of said spherical surface located in a plane passing through said central axis, means carried by said bowl for actuating said first optical means to cause said luminous spot to be displaced on said circle, an observation table carried by said frame at a distance from said bowl, said table having a central point, an annular member pivoted in said frame about an axis perpendicular to said table and passing through the central point thereof, a light projector for forming a light spot on said

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  • 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)
US679611A 1956-08-29 1957-08-22 Eye testing perimeters Expired - Lifetime US3071040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1188832X 1956-08-29

Publications (1)

Publication Number Publication Date
US3071040A true US3071040A (en) 1963-01-01

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ID=9665505

Family Applications (1)

Application Number Title Priority Date Filing Date
US679611A Expired - Lifetime US3071040A (en) 1956-08-29 1957-08-22 Eye testing perimeters

Country Status (7)

Country Link
US (1) US3071040A (enrdf_load_stackoverflow)
BE (1) BE559992A (enrdf_load_stackoverflow)
CH (1) CH347652A (enrdf_load_stackoverflow)
DE (1) DE1188832B (enrdf_load_stackoverflow)
FR (1) FR1157508A (enrdf_load_stackoverflow)
GB (1) GB829759A (enrdf_load_stackoverflow)
LU (1) LU35370A1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235321A (en) * 1961-05-08 1966-02-15 Jayle Field of vision testing apparatus
US3317268A (en) * 1962-03-28 1967-05-02 Bausch & Lomb Scanning light spot projector and coupled recording device for visual field testing
US3414348A (en) * 1961-10-24 1968-12-03 Gambs Paul Frederic Marie Hemispherical eye test perimeter with coupled test light spot and recording light spot projectors
EP1155656A1 (de) * 2000-05-18 2001-11-21 Bernhard Dr. med. Löw Vorrichtung und Verfahren zur Gesichtsfelduntersuchung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US596044A (en) * 1897-12-21 And ferdinand
US926035A (en) * 1908-01-21 1909-06-22 John H Tomlinson Sight-testing apparatus.
US1618291A (en) * 1925-03-12 1927-02-22 Zeiss Carl Fa Device for determining the field of vision
US2374854A (en) * 1942-12-24 1945-05-01 Feinbloom William Perimeter
CH264664A (de) * 1948-02-19 1949-10-31 M J Purtschert & Co Ag Luzern Verfahren zur Ausmessung des Gesichtsfeldes des Auges und Vorrichtung zur Ausübung des Verfahrens.
FR991307A (fr) * 1949-05-17 1951-10-04 Perfectionnements apportés aux périmètres
FR1057488A (fr) * 1952-05-29 1954-03-09 Centre Nat Rech Scient Adapto-campimètre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH243383A (de) * 1944-11-02 1946-07-15 Haag Streit Augenärztlicher Apparat zur Prüfung des Gesichtsfeldes mit künstlicher Beleuchtung und Mitteln zur optischen Projektion einer Lichtmarke.
DE887709C (de) * 1949-05-17 1953-08-27 Emile Dr Zenatti Perimeter
GB694128A (en) * 1950-12-11 1953-07-15 Hugh Coulter Forrest Improvements in or relating to optical perimeters

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US596044A (en) * 1897-12-21 And ferdinand
US926035A (en) * 1908-01-21 1909-06-22 John H Tomlinson Sight-testing apparatus.
US1618291A (en) * 1925-03-12 1927-02-22 Zeiss Carl Fa Device for determining the field of vision
US2374854A (en) * 1942-12-24 1945-05-01 Feinbloom William Perimeter
CH264664A (de) * 1948-02-19 1949-10-31 M J Purtschert & Co Ag Luzern Verfahren zur Ausmessung des Gesichtsfeldes des Auges und Vorrichtung zur Ausübung des Verfahrens.
FR991307A (fr) * 1949-05-17 1951-10-04 Perfectionnements apportés aux périmètres
FR1057488A (fr) * 1952-05-29 1954-03-09 Centre Nat Rech Scient Adapto-campimètre

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235321A (en) * 1961-05-08 1966-02-15 Jayle Field of vision testing apparatus
US3414348A (en) * 1961-10-24 1968-12-03 Gambs Paul Frederic Marie Hemispherical eye test perimeter with coupled test light spot and recording light spot projectors
US3317268A (en) * 1962-03-28 1967-05-02 Bausch & Lomb Scanning light spot projector and coupled recording device for visual field testing
EP1155656A1 (de) * 2000-05-18 2001-11-21 Bernhard Dr. med. Löw Vorrichtung und Verfahren zur Gesichtsfelduntersuchung

Also Published As

Publication number Publication date
BE559992A (enrdf_load_stackoverflow)
LU35370A1 (enrdf_load_stackoverflow)
CH347652A (fr) 1960-07-15
GB829759A (en) 1960-03-09
DE1188832B (de) 1965-03-11
FR1157508A (fr) 1958-05-30

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