DE736340C - Device for the objective determination of dark adaptation - Google Patents

Device for the objective determination of dark adaptation

Info

Publication number
DE736340C
DE736340C DEZ26714D DEZ0026714D DE736340C DE 736340 C DE736340 C DE 736340C DE Z26714 D DEZ26714 D DE Z26714D DE Z0026714 D DEZ0026714 D DE Z0026714D DE 736340 C DE736340 C DE 736340C
Authority
DE
Germany
Prior art keywords
eye
strips
dark adaptation
objective determination
examined
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
DEZ26714D
Other languages
German (de)
Inventor
Dr Med Alois Meesmann
Dr Med Hans Rieken
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.)
Carl Zeiss SMT GmbH
Original Assignee
Carl Zeiss SMT GmbH
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 Carl Zeiss SMT GmbH filed Critical Carl Zeiss SMT GmbH
Priority to DEZ26714D priority Critical patent/DE736340C/en
Priority to FR887494D priority patent/FR887494A/en
Application granted granted Critical
Publication of DE736340C publication Critical patent/DE736340C/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
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/06—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision
    • 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
    • A61B3/06—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision
    • A61B3/063—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision for testing light sensitivity, i.e. adaptation
    • 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
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4863—Measuring or inducing nystagmus

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Ophthalmology & Optometry (AREA)
  • Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Eye Examination Apparatus (AREA)

Description

Einrichtung zur objektiven Bestimmung der Dunkeladaptation Die unkelad aptation konnte bisher nur mit subjektiven Verfahren bestimmt werden, bei denen man auf die Angaben des Prüflings angewiesen war. Es waren daher besonders Untersuchungen auf Simulation von Nachtblindheit schwierig und zeitraubend.Device for the objective determination of dark adaptation The unkelad Until now, aptation could only be determined with subjective methods in which one was dependent on the information provided by the examinee. They were therefore special investigations simulating night blindness is difficult and time consuming.

Nach der Erfindung besitzt man nun in dem optokinetischen Nystagmus (Augenzittern) ein zuverlässiges Mittel für eine objektive Be stimmung der Dunkeladaptation. Erfindungsgemäß wird zu der objektiven Bestimmung eine Einrichtung verwendet, bei der mit einem Gerät dem zu untersuchenden Auge des Prüflings ein in seiner Helligkeit veränderbares, vorbeiziehendes Bild schwarzweißer, parallel zueinander verlaufender Streifen dargeboten wird, während an dem zu untersuchenden Auge oder in einem zweiten, das andere Auge des Prüflings isolierenden Gerät der an diesem Auge auftretende optokinetische Nstagmus beobachtet wird. Hierbei wird das-bes obachtete Auge mit einem schwachen, vorzugsweise roten Licht beleuchtet. According to the invention one now has nystagmus in the optokinetic (Eye tremors) a reliable means for an objective determination of dark adaptation. According to the invention, a device is used for the objective determination the one with a device to the examined eye of the test object in its brightness Changeable, passing image of black and white, parallel to each other Strip is presented, while on the eye to be examined or in a second, The device isolating the other eye of the test object is the one that occurs on this eye optokinetic nstagmus is observed. Here the observed eye is included illuminated by a weak, preferably red, light.

Wie bekannt ist, tritt der optokinetische Nystagmus in dem Augenblick ein, in dem das Auge des Prüflings die geringste Helligkeit empfindet. Bringt man den Prüfling in einen Dunkelraum und bietet ihm das vorbeiziehende Bild schwarzweißer Streifen dar, so werden beide Augen des Prüflings, also auch das Auge, welches von dem vorbeiziehenden Bild der Streifen z. B. durch einen Schirm isoliert ist und beobachtet wird, einen geringen Systagmus zeigen, sobald der Prüfling Helligkeitsunterschiede wahrnimmt, womit der Schwellem-ert objektiv festgestellt ist. As is known, the optokinetic nystagmus occurs at the moment one in which the test object's eye perceives the lowest brightness. One brings takes the test specimen into a dark room and offers him the black and white picture passing by Stripes, both eyes of the test object, including the eye which is from the passing image of the stripes z. B. is isolated by a screen and is observed to show a slight systagmus as soon as the test object changes in brightness perceives what the threshold is objectively established.

Zur Hervorrufung des optokinetischen Nystagmus kann eine Drehtrommel verwendet werden, auf der die schwarzweiBen Streifen so angeordnet sind, daß sie parallel zu der Trommeidrehachse verlaufen. Hierbei kann die Anordnung so-getroften sein, daß die Trommel meßbar be- oder durchleuchtet und durch einen motorischen Antrieb in gleichbleibende oder veränderliche Umdrehung versetzt wird. A rotating drum can be used to induce optokinetic nystagmus can be used, on which the black and white strips are arranged so that they run parallel to the drum axis of rotation. The arrangement can be so chosen be that drum measurably illuminated or transilluminated and through a motor drive is set in constant or variable rotation.

Auch können die Streifen mittels eines Pro jektionsgerätes auf einem Projektionsschirm entworfen werden, wobei die Streifen ailf einem laufenden Filmband angebracht sind. oder das Filmband steht in dem Projektionsgerät still, und seine Bewegung auf dem Projektionsschirm wird in bekannter Veise mittels eines Spiegelrades o. dgl. erzeugt. The strips can also be projected onto one using a Pro Projection screen can be designed with the strips ailf a moving film tape are appropriate. or the film tape stands still in the projection device, and his Movement on the projection screen is in a known Veise by means of a mirror wheel or the like.

Schließlich können die Streifen auf einem durchsichtigen Band angebracht sein, das vor einer be- oder durchleuchteten Scheibe vorbeibewegt wird. Finally, the strips can be attached to a clear tape be that is moved in front of an illuminated or transilluminated pane.

Für die Beobachtung des Eintritts des optokinetischen Nystagmus lassen sich bekannte Methoden anwenden, z. B. die mechanische Methode der Aufzeichnung nach Ohm, die akustische mit Hilfe des auftretenden Muskeltones oder eine elektrische Methode. Leave for observation of the onset of optokinetic nystagmus use known methods, e.g. B. the mechanical method of recording according to Ohm, the acoustic with the help of the occurring muscle tone or an electric Method.

Wird das Auge durch ein dunliles Haftglas abgedeckt, das aut seiner äußeren Oberfläche einen Lumineszenzpunkt trägt, so kann der Nystagmus an der Bewegung des Lumineszenzpunktes festgestellt werden. Diese Methoden lassen sich außer der zuletzt genannten Methode auch bei Einäugigkeit durchführen.If the eye is covered by a thin adhesive glass that is attached to his outer surface bears a luminescent point, so the nystagmus can participate in the movement of the luminescence point can be determined. These methods can be used in addition to the Carry out the last-mentioned method even if you are one-eyed.

Claims (4)

P A T E N T A N S P R Ü C H E : 1. Einrichtung zur objektiven Bestimmungder Dunkeladaptation, gekennzeichnet durch eine solche Ausgestaltung, daß mit einem Gerät dem zu untersuchenden Auge des Prüflings ein in seiner Helligkeit veränderbares, vorbeiziehendes Bild schwarzweißer, parallel zueinander verlaufender Streifen dargeboten wird, während an dem zu untersuchenden Auge oder mit einem zweiten, das andere Auge des Prüflings isolierenden Gerät der an diesem Auge auftretende optokinetische Nystagmus beobachtet wird. P A T E N T A N S P R Ü C H E: 1. Device for the objective determination of the Dark adaptation, characterized by such a configuration that with a If the eye of the test object to be examined has a device whose brightness can be changed, A passing image of black and white, parallel stripes presented while on the eye to be examined or with a second, the other eye of the device under test, the optokinetic nystagmus that occurs in this eye is observed. 2. Einrichtung nach Anspruch I, dadurch gekennzeichnet, daß die Streifen auf einer Drehtrommel so angeordnet sind, daß sie parallel zu der Trommeldrehachse @ erlaufen. 2. Device according to claim I, characterized in that the strips are arranged on a rotary drum so that they are parallel to the drum axis of rotation @ run. 3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Streifen mit einem Projektionsgerät auf einem Projektionsschirm entworfen werden. 3. Device according to claim 1, characterized in that the strips be designed with a projection device on a projection screen. 4. Einrichtung nachAnspruch I, dadurch gekennzeichnet, daß die Streifen auf einem durchsichtigen Band angebracht sind, das vor einer be- oder durchleuchteten Scheibe vorbeibewegt wird. 4. Device according to Claim I, characterized in that the strips are attached to a transparent tape that is in front of a lighted or x-rayed Disc is moved past.
DEZ26714D 1941-11-05 1941-11-05 Device for the objective determination of dark adaptation Expired DE736340C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEZ26714D DE736340C (en) 1941-11-05 1941-11-05 Device for the objective determination of dark adaptation
FR887494D FR887494A (en) 1941-11-05 1942-11-03 Instrument for objectively determining the adaptation of ocular vision to darkness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ26714D DE736340C (en) 1941-11-05 1941-11-05 Device for the objective determination of dark adaptation

Publications (1)

Publication Number Publication Date
DE736340C true DE736340C (en) 1943-06-16

Family

ID=7626589

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ26714D Expired DE736340C (en) 1941-11-05 1941-11-05 Device for the objective determination of dark adaptation

Country Status (2)

Country Link
DE (1) DE736340C (en)
FR (1) FR887494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004112597A1 (en) * 2003-06-20 2004-12-29 Feher Janos Process and apparatus for examining the visual funcions of the eye

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004112597A1 (en) * 2003-06-20 2004-12-29 Feher Janos Process and apparatus for examining the visual funcions of the eye
US7396128B2 (en) 2003-06-20 2008-07-08 Feher Janos Process and apparatus for examining the visual functions of the eye

Also Published As

Publication number Publication date
FR887494A (en) 1943-11-15

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