WO1996032054A1 - Procede de mesure de la pression intraoculaire - Google Patents

Procede de mesure de la pression intraoculaire Download PDF

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Publication number
WO1996032054A1
WO1996032054A1 PCT/DE1996/000558 DE9600558W WO9632054A1 WO 1996032054 A1 WO1996032054 A1 WO 1996032054A1 DE 9600558 W DE9600558 W DE 9600558W WO 9632054 A1 WO9632054 A1 WO 9632054A1
Authority
WO
WIPO (PCT)
Prior art keywords
eye
vibrations
measured
intraocular pressure
measuring
Prior art date
Application number
PCT/DE1996/000558
Other languages
German (de)
English (en)
Inventor
Wilhelm Stork
Christine Kreiner
Original Assignee
Visionet Gesellschaft Für Mikrotechnische Systemlösungen Mbh
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 Visionet Gesellschaft Für Mikrotechnische Systemlösungen Mbh filed Critical Visionet Gesellschaft Für Mikrotechnische Systemlösungen Mbh
Publication of WO1996032054A1 publication Critical patent/WO1996032054A1/fr

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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
    • A61B3/16—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers
    • A61B3/165—Non-contacting tonometers

Definitions

  • the invention relates to a method for measuring the intraocular pressure according to the preamble of claim 1.
  • Measuring the intraocular pressure is a standard method in ophthalmology. It is used in particular for the diagnosis and monitoring of people at risk of glaucoma, whereby the optic nerve can be damaged due to increased intraocular pressure so that blindness can occur.
  • Air pressure is deformed. This deformation is evaluated using an optical measuring method, a specific deformation at the respective deformation pressure being used as a measure of the intraocular pressure.
  • the invention has for its object to provide a method for measuring the intraocular pressure which does not have the above-mentioned shortcomings, or which can be carried out simply, painlessly and without unpleasant consequences for the patient.
  • the vibrations of the eye which are generated by the pulsatile arterial pressure, are measured without contact and the intraocular pressure is determined therefrom.
  • the contactless measurement advantageously prevents irritation of the eye to be examined, so that local anesthesia is avoided in the case of a corresponding examination. Infections are also avoided.
  • the method according to the invention is therefore advantageously also suitable for examination following an eye operation.
  • the vibrations of the surface of the eye are generated by the arterial pressure.
  • the intraocular pressure can be determined from the analysis of the pulsatile vibrations of the surface of the eye.
  • the Vibrations measured in particular the surface of the eye preferably non-contact optical vibration measurement methods are used.
  • this non-contact optical vibration measurement method known per se
  • Triangulation vibrometer or laser interferometric vibrometer can be used.
  • a laser triangulation vibrometer is suitable, for example, for vibration frequencies up to approx. 50 kHz and for measuring strokes or amplitudes of at least 0.1 ⁇ m. Such one
  • Laser triangulation vibrometer is known, for example, under the type designation LAP-LMS10 from Laser Applications Lüneburg.
  • the laser triangulation mentioned can also be carried out, for example, using a device from MEL in Kunststoff.
  • the laser interferometric methods are more suitable for the method according to the invention since even smaller vibration strokes can be measured with them.
  • they are designed as interferometers.
  • An example of such an interferometer is the laser vibrometer from Polytec, Waldbronn, with the type designation laser single-point vibrometer OFV-302.
  • Such laser interferometric vibrometers are suitable for measuring frequencies in the MHz range and also very low amplitudes in the nanometer range.
  • Vibration spectrum is similar to the tensioning of a string of a side instrument or similar to the vibration behavior of a more or less inflated ball, ie the vibration frequencies are proportional to the intraocular pressure in a certain way.
  • the intraocular pressure can thus be determined by analyzing the non-contact measured vibration spectrum, for example the surface of the eye.
  • vibrations of the eye to be examined must be distinguished from movements of the entire head from the measuring system used. This distinction can e.g. by vibration measurement at two or more points of the eye to be examined or by an additional measurement on the second eye. This makes it possible to compensate for the absolute movements of the head.
  • the vibration spectra of the head are due to its size or its relatively large mass at much lower frequencies than that of the eye, which has a small mass compared to the mass of the head, so that the absolute movements of the head can be compensated for by a corresponding frequency analysis.
  • Comparative measurements ascertainable A known standard method of the type mentioned at the outset can be used to carry out these quasi-one-off comparative measurements. Such comparative measurements or calibration measurements can easily be carried out by a person skilled in the field of ophthalmology, so that no detailed explanations are required in this regard.

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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)

Abstract

L'invention concerne un procédé de mesure de la pression intraoculaire selon lequel on analyse le spectre des oscillations de l'÷il. Ce spectre des oscillations est excité à l'intérieur de l'÷il par une pression artérielle pulsatile interne, donc sans contact. Du spectre des oscillations, notamment de la surface de l'÷il, on déduit une grandeur de la pression intraoculaire de l'÷il examiné, sans contact au moyen d'un vibromètre.
PCT/DE1996/000558 1995-04-10 1996-03-23 Procede de mesure de la pression intraoculaire WO1996032054A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512711.0 1995-04-10
DE1995112711 DE19512711C1 (de) 1995-04-10 1995-04-10 Verfahren zur Messung des Augeninnendruckes

Publications (1)

Publication Number Publication Date
WO1996032054A1 true WO1996032054A1 (fr) 1996-10-17

Family

ID=7758834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/000558 WO1996032054A1 (fr) 1995-04-10 1996-03-23 Procede de mesure de la pression intraoculaire

Country Status (2)

Country Link
DE (1) DE19512711C1 (fr)
WO (1) WO1996032054A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116944A1 (es) * 1996-12-26 1998-07-16 Carreras Egana Fcp Javier Tonometro ocular mediante interferometria laser y ultrasonidos.
WO2002030274A3 (fr) * 2000-10-10 2002-06-13 Chru Lille Procede et dispositif de detection des modes propres de vibration d'un oeil, par interferometrie laser, et leur application a la mesure de la pression intra-oculaire
WO2010031395A1 (fr) * 2008-09-19 2010-03-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif laser et procédé d’exploration ophtalmologique sans contact avec les yeux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20145205L (fi) 2014-03-04 2015-09-05 Photono Oy Menetelmä ja järjestelmä silmänpainemittauksiin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354002A1 (fr) * 1988-08-05 1990-02-07 Leica Inc. Système d'alignement d'un instrument ophtalmologique
EP0418746A1 (fr) * 1989-09-22 1991-03-27 DATRON-ELECTRONIC GmbH Méthode et appareil pour mésurer la pression intra-oculaire
WO1993021820A1 (fr) * 1992-04-30 1993-11-11 Alcon Surgical, Inc. Interferometre servant a mesurer la vitesse de la cornee

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882718A (en) * 1971-05-05 1975-05-13 American Optical Corp Noncontacting pressure measuring apparatus
US5148807A (en) * 1990-08-28 1992-09-22 Ohio State University Non-contact tonometer
JPH05253190A (ja) * 1991-10-10 1993-10-05 Massie Res Lab Inc 非接触式トノメーター
US5375595A (en) * 1993-03-17 1994-12-27 The Regents Of The University Of Calif. Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354002A1 (fr) * 1988-08-05 1990-02-07 Leica Inc. Système d'alignement d'un instrument ophtalmologique
EP0418746A1 (fr) * 1989-09-22 1991-03-27 DATRON-ELECTRONIC GmbH Méthode et appareil pour mésurer la pression intra-oculaire
WO1993021820A1 (fr) * 1992-04-30 1993-11-11 Alcon Surgical, Inc. Interferometre servant a mesurer la vitesse de la cornee

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116944A1 (es) * 1996-12-26 1998-07-16 Carreras Egana Fcp Javier Tonometro ocular mediante interferometria laser y ultrasonidos.
WO2002030274A3 (fr) * 2000-10-10 2002-06-13 Chru Lille Procede et dispositif de detection des modes propres de vibration d'un oeil, par interferometrie laser, et leur application a la mesure de la pression intra-oculaire
US7441898B2 (en) 2000-10-10 2008-10-28 Centre Hospitalier Regional Universitaire De Lille Method and apparatus for detecting natural modes of vibration of an eye by laser interferometry, and an application thereof to measuring intraocular pressure
WO2010031395A1 (fr) * 2008-09-19 2010-03-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif laser et procédé d’exploration ophtalmologique sans contact avec les yeux

Also Published As

Publication number Publication date
DE19512711C1 (de) 1996-12-12

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