WO1997013449A2 - Eye fixation aid - Google Patents

Eye fixation aid Download PDF

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Publication number
WO1997013449A2
WO1997013449A2 PCT/DE1996/002060 DE9602060W WO9713449A2 WO 1997013449 A2 WO1997013449 A2 WO 1997013449A2 DE 9602060 W DE9602060 W DE 9602060W WO 9713449 A2 WO9713449 A2 WO 9713449A2
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WO
WIPO (PCT)
Prior art keywords
eye
light
patient
operated
light sources
Prior art date
Application number
PCT/DE1996/002060
Other languages
German (de)
French (fr)
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WO1997013449A9 (en
WO1997013449A3 (en
Inventor
Andreas Frohn
Original Assignee
Andreas Frohn
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.)
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Publication date
Application filed by Andreas Frohn filed Critical Andreas Frohn
Publication of WO1997013449A2 publication Critical patent/WO1997013449A2/en
Publication of WO1997013449A9 publication Critical patent/WO1997013449A9/en
Publication of WO1997013449A3 publication Critical patent/WO1997013449A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • 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
    • A61B3/14—Arrangements specially adapted for eye photography
    • A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
    • A61B3/152—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for aligning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F9/009—Auxiliary devices making contact with the eyeball and coupling in laser light, e.g. goniolenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00681—Aspects not otherwise provided for
    • A61B2017/00694—Aspects not otherwise provided for with means correcting for movement of or for synchronisation with the body

Definitions

  • the invention relates to a device for supporting the fixation of the viewing direction and thus the position of a human eye during an eye operation.
  • the eye to be operated In the case of eye surgery, it is important that the eye to be operated is held in a fixed position so that the operating doctor can carry out the individual operation steps in a targeted and safe manner.
  • Fixing the position of the eye to be operated has not only advantages: it would sometimes even be desirable to change the position of the eye in order to, for example, B. to be able to perform a surgical cut in a more comfortable posture for the doctor to be operated and thus also more safely. For this reason, some doctors prefer to perform eye surgery even without or only with a consciously light anesthetic, so that the patient can move the eye to another desired position at the request of the operating doctor. To hereby complete success
  • the invention has for its object to provide a device with which the fixation of the viewing direction and thus the position of the eye in the eye socket is supported and can be made easier for the patient.
  • the basic idea of the invention is therefore to keep the eyes movable and to fix the position of the eye to the patient for the eye not to be operated on to offer an image pattern with at least one image point to which he should keep his gaze directed.
  • the image pattern can e.g. be a luminous picture pattern or have several luminous picture elements that can be switched on and off, if necessary.
  • a preferred possibility is to offer the patient an essentially point-shaped light source, at which he should keep his gaze focused.
  • the instruction to fix one's gaze on the light source can be given before the operation and can also be easily followed and followed during the operation by a supportive instruction from the doctor. Since the gaze directions of both eyes are positively coupled with each other, the eye to be operated on is also fixed in the desired position. If this position is to be changed, the patient is offered a light source which is positioned such that the eye is in the position desired by the doctor when the patient fixes this light source.
  • LEDs light-emitting diodes, so-called LEDs, are preferably selected, to which a lens or a lens arrangement may be assigned, so that that of the 3
  • Diodes emitted light is focused on the patient's retina.
  • a small point-shaped light source e.g. B. a light-emitting diode, which is optionally placed in front of a lens or lens arrangement, in a frame to be placed on the eye not to be operated on and spatially displaced in this frame.
  • z. B. also serve a diode with a coupled optical fiber, the free end of which then serves as a point light source.
  • a simpler option is to arrange the light sources in a regular grid, preferably in an orthogonal grid, and then selectively switch the individual light sources on and off using a selector circuit.
  • the selector circuit has a direction sensor, for. B. in the form of a joystick or a keyboard with several direction keys.
  • the selector circuit can only have four direction keys, which are assigned to the directions UP, DOWN, RIGHT and LEFT.
  • the location of the actually selected point-shaped light source can be indicated on a simple display which receives its signals from electronics connected to the selector circuit.
  • the device to be placed on the eye that is not to be operated on preferably has the shape of an eye cover or eye patch, which can be placed on the eye in a substantially light-tight manner, so that no stray light falls into the eye.
  • the position of the eye patch can be fixed.
  • a diode array is then provided for the eye cover, possibly preceded by a lens or a lens arrangement is so that the light of the diode that is switched on falls from a certain direction into the patient's eye and the patient can thus easily fix the eye on this light source.
  • An advantageous solution has also been found to be an imaging device, e.g. to use a small monitor with appropriate optics, which is placed on the patient's eye and with which image elements such as figures, landscapes, etc. are presented to the patient, the patient then fixing his eye on very specific image elements.
  • the device has an eye cover 1 which is placed on the patient's eye, which is not to be operated on.
  • This consists of a light source housing 2 and a drape 3.
  • the housing 2 is open towards the eye in the figure downwards and widens at the lower end to a shell 4, which is anatomically shaped so that this on the face of the The patient is lying around the eye.
  • a base 5 of the housing 2 a plurality of small, approximately point-shaped light-emitting diodes 6 are arranged in a flat, regular, orthogonal matrix grid, to which a lens 7 may be placed, so that the light from the LEDs is projected onto the patient's retina.
  • the diodes 6 are connected to a selector circuit 9 via a connecting cable 8.
  • This selector circuit 9 has a current source 10, a keyboard 11, electronic counter 12 and a display 13.
  • the diodes 6 are supplied via the current source 10, the selection circuit ensuring that only one of the diodes is illuminated at a time.
  • Four direction keys 14, 15, 16 and 17 of the keyboard can be used to switch on a new diode which is above, below, to the right or left of the diode 6 which has just been switched on, which is switched off when the new diode is switched on.
  • the inputs via the keyboard 11 are registered in the number electronics 12 and forwarded to the display 13, which shows schematically which of the diodes 6 is switched on.
  • the display can e.g. B. be an image of the array of diodes 6; other representations, e.g. B. the position of the diode that is switched on in relation to the center of the eye are of course possible. In certain cases it is also possible to switch on several diodes at the same time.
  • the selector circuit 9 can also have a joystick 18 or a trackball 19 or a computer mouse 20 with which the diodes to be switched on can be selected more freely than with the direction keys.
  • a screen could also be used instead of light emitting diodes, e.g. a liquid crystal screen, so that instead of a light spot or multiple light spots, any image can be presented as a fixation object. Certain picture elements can then e.g. be marked with the selection device so that the patient can then fix these picture elements.

Abstract

In order to fix the gaze and therefore the position of a human eye during an eye operation, a projector is provided, which is preferably designed as an eye cover (1) set on the non-operated eye of the patient and preferably with several point-shaped light sources (6), for example light-emitting diodes, the light of which is directed onto the retina of the eye without being focused or after being optionally focused through a lens or lens arrangement (7). The light sources may be selectively switched on and off by means of a selecting apparatus (9), for example a keyboard (11) with directional keys (14, 15, 16 and 17). As the movements of both eyes are forcibly coupled, the desired position of the operated eye may be adjusted by asking the patient to fixate a selected corresponding light source.

Description

Vorrichtung zur Unterstützung der Augenfixierung Device for supporting eye fixation
Die Erfindung bezieht sich auf eine Vorrichtung zur Unterstützung der Fixierung der Blickrichtung und damit der Lage eines menschlichen Auges wahrend einer Augenoperation.The invention relates to a device for supporting the fixation of the viewing direction and thus the position of a human eye during an eye operation.
Bei einer Augenoperation ist es wichtig, daß das zu operierende Auge in seiner Lage fixiert gehalten wird, damit der operierende Arzt gezielt und sicher die einzelnen Operationsschritte vornehmen kann. Hierzu ist es bekannt, das nicht zu operierende Auge abzudecken, um optische Störungen des Patienten möglichst auszuschalten, und das zu operierende Auge zu betauben, und zwar entweder mit einer Spritze oder mit Tropfen. Ist die Spritzenbetaubung nicht ausreichend, so kann der Patient das Auge noch bewegen, was für die Operation hinderlich sein kann. Bei der Tropfenbetäubung kann der Patient das Auge auf jeden Fall bewegen.In the case of eye surgery, it is important that the eye to be operated is held in a fixed position so that the operating doctor can carry out the individual operation steps in a targeted and safe manner. For this purpose, it is known to cover the eye that is not to be operated on, in order to eliminate optical disorders of the patient as far as possible, and to numb the eye to be operated on, either with a syringe or with drops. If the injection is insufficient, the patient can still move the eye, which can be an obstacle to the operation. In any case, the patient can move the eye with the drop anesthetic.
Die Fixierung der Lage des zu operierenden Auges hat aber nicht nur Vorteile: es wäre manchmal sogar wünschenswert, die Lage des Auges zu verandern, um z. B. einen chirugischen Schnitt in einer für den zu operierenden Arzt bequemeren Haltung und damit auch sicherer ausführen zu können. Aus diesem Grunde bevorzugen es einige Arzte, Augenoperationen sogar ohne oder nur mit einer bewußt leichten Betäubung durchzufuhren, so daß der Patient auf Verlangen des operierenden Arztes das Auge in eine andere gewünschte Lage bewegen kann. Um hiermit vollen Erfolg zuFixing the position of the eye to be operated has not only advantages: it would sometimes even be desirable to change the position of the eye in order to, for example, B. to be able to perform a surgical cut in a more comfortable posture for the doctor to be operated and thus also more safely. For this reason, some doctors prefer to perform eye surgery even without or only with a consciously light anesthetic, so that the patient can move the eye to another desired position at the request of the operating doctor. To hereby complete success
haben, sind präzise Anweisungen des operierenden Arztes und ebenso präzise Mitarbeit des Patienten notwendig. Es ist einzusehen, daß durch die körperliche und seelische Belastung des Patienten bei der Operation es für diesen nicht leicht sein wird, den Anweisungen des Arztes präzise zu folgen und danach auch noch das Auge in der gewünschtenprecise instructions from the operating doctor and just as precise cooperation from the patient are necessary. It can be seen that due to the physical and mental strain on the patient during the operation, it will not be easy for the patient to follow the doctor's instructions precisely to follow and then also the eye in the desired one
Lage fixiert zu halten.Keep position fixed.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung anzugeben, mit der die Fixierung der Blickrichtung und damit der Lage des Auges in der Augenhöhle unterstutzt und für den Patienten erleichtert werden kann.The invention has for its object to provide a device with which the fixation of the viewing direction and thus the position of the eye in the eye socket is supported and can be made easier for the patient.
Diese Aufgabe ist gemäß der Erfindung durch die Merkmale des Patentanspruches 1 gelost.This object is achieved according to the invention by the features of claim 1.
Der Grundgedanke der Erfindung liegt demnach darin, die Augen beweglich zu halten und zur Fixierung der Lage des Auges dem Patienten für das nicht zu operierende Auge ein Bildmuster mit zumindest einem Bildpunkt anzubieten, auf das er seinen Blick gerichtet halten soll. Das Bildmuster kann z.B. ein leuchtendes Bildmuster sein oder mehrere, gegebenenfalls ein- und ausschaltbare leuchtende Bildelemente aufweisen. Eine bevorzugte Möglichkeit ist es, dem Patienten eine im wesentlichen punktformige Lichtquelle anzubieten, auf die er seinen Blick gerichtet halten soll. Die Anweisung, den Blick auf die Lichtquelle zu fixieren, kann vor der Operation gegeben werden und ist auch wahrend der Operation gegebenenfalls durch eine unterstützende Anweisung des Arztes einfach zu befolgen und einzuhalten. Da die Blickrichtungen beider Augen miteinander zwangsgekoppelt sind, wird hiermit auch das zu operierende Auge in der gewünschten Lage fixiert. Soll diese Lage verändert werden, so wird dem Patienten eine Lichtquelle angeboten, die so gelegen ist, daß das Auge dann, wenn der Patient diese Lichtquelle fixiert, sich in der vom Arzt gewünschten Lage befindet.The basic idea of the invention is therefore to keep the eyes movable and to fix the position of the eye to the patient for the eye not to be operated on to offer an image pattern with at least one image point to which he should keep his gaze directed. The image pattern can e.g. be a luminous picture pattern or have several luminous picture elements that can be switched on and off, if necessary. A preferred possibility is to offer the patient an essentially point-shaped light source, at which he should keep his gaze focused. The instruction to fix one's gaze on the light source can be given before the operation and can also be easily followed and followed during the operation by a supportive instruction from the doctor. Since the gaze directions of both eyes are positively coupled with each other, the eye to be operated on is also fixed in the desired position. If this position is to be changed, the patient is offered a light source which is positioned such that the eye is in the position desired by the doctor when the patient fixes this light source.
Bevorzugt werden als Lichtquellen Licht emittierende Dioden, sogenannte LED's gewählt, denen eventuell eine Linse bzw. eine Linsenanordnung zugeordnet ist, damit das von den 3As light sources, light-emitting diodes, so-called LEDs, are preferably selected, to which a lens or a lens arrangement may be assigned, so that that of the 3
Dioden ausgestrahlte Licht auf der Netzhaut des Patienten fokussiert wird.Diodes emitted light is focused on the patient's retina.
Es sind vielfältige Arten möglich, die Projektionsrichtung zu andern, so daß die Augen jeweils die gewünschte Lage einnehmen. Denkbar wäre es, eine kleine punktformige Lichtquelle, z. B. eine Licht emittierende Diode, der gegebenenfalls eine Linse oder Linsenanordnung vorgesetzt ist, in einem auf das nicht zu operierende Auge aufzusetzendem Gestell anzuordnen und in diesem Gestell räumlich zu verschieben. Hierbei kann als Lichtquelle z. B. auch eine Diode mit einer angekoppelten Lichtleitfaser dienen, deren freies Ende dann als Punktiichtquelle dient.There are many ways to change the direction of projection so that the eyes are in the desired position. It would be conceivable to use a small point-shaped light source, e.g. B. a light-emitting diode, which is optionally placed in front of a lens or lens arrangement, in a frame to be placed on the eye not to be operated on and spatially displaced in this frame. Here, z. B. also serve a diode with a coupled optical fiber, the free end of which then serves as a point light source.
Eine einfachere Möglichkeit ist es, die Lichtquellen in einem regelmäßigen Raster, vorzugsweise in einem orthogonalem Raster anzuordnen und dann die einzelnen Lichtquellen mit einer Wählschaltung selektiv ein- und auszuschalten. Die Wählschaltung weist hierbei einen Richtungsgeber auf, z. B. in Form eines Joysticks oder einer Tastatur mit mehreren Richtungstasten. Sind die Lichtquellen z. B. in einem regelmäßigen orthogonalen Raster angeordnet, so kann die Wahlschaltung lediglich vier Richtungstasten aufweisen, die den Richtungen AUF, AB, RECHTS und LINKS zugeordnet sind. Die Lage der tatsachlich angewählten punktförmigen Lichtquelle kann auf einer einfachen Anzeige angegeben werden, die ihre Signale von einer mit der Wählschaltung verbundenen Elektronik erhält.A simpler option is to arrange the light sources in a regular grid, preferably in an orthogonal grid, and then selectively switch the individual light sources on and off using a selector circuit. The selector circuit has a direction sensor, for. B. in the form of a joystick or a keyboard with several direction keys. Are the light sources such. B. arranged in a regular orthogonal grid, the selector circuit can only have four direction keys, which are assigned to the directions UP, DOWN, RIGHT and LEFT. The location of the actually selected point-shaped light source can be indicated on a simple display which receives its signals from electronics connected to the selector circuit.
Die auf das nicht zu operierende Auge aufzusetzende Einrichtung weist vorzugsweise die Form einer Augenabdeckung bzw. Augenklappe auf, die auf das Auge im wesentlichen lichtdicht aufsetzbar ist, so daß kein Streulicht in das Auge einfällt. Die Augenklappe kann in ihrer Lage fixiert werden. An der Innenseite derThe device to be placed on the eye that is not to be operated on preferably has the shape of an eye cover or eye patch, which can be placed on the eye in a substantially light-tight manner, so that no stray light falls into the eye. The position of the eye patch can be fixed. On the inside of the
Augenabdeckung ist dann ein Diodenarray vorgesehen, dem eventuell eine Linse bzw. eine Linsenanordnung vorgesetzt ist, so daß das Licht der jeweils eingeschalteten Diode aus einer bestimmten Richtung in das Auge des Patienten fallt und dieser somit leicht das Auge auf diese Lichtquelle fixieren kann.A diode array is then provided for the eye cover, possibly preceded by a lens or a lens arrangement is so that the light of the diode that is switched on falls from a certain direction into the patient's eye and the patient can thus easily fix the eye on this light source.
Als vorteilhafte Losung hat sich auch herausgestellt, anstelle von Lichtquellen eine bildgebende Einrichtung, z.B. einen kleinen Monitor mit entsprechender Optik zu verwenden, der auf das Auge des Patienten aufgesetzt wird und mit dem dem Patient Bildelemente, wie Figuren, Landschaften etc. dargeboten werden, wobei sich dann der Patient sein Auge auf ganz bestimmte Bildelemente fixiert.An advantageous solution has also been found to be an imaging device, e.g. to use a small monitor with appropriate optics, which is placed on the patient's eye and with which image elements such as figures, landscapes, etc. are presented to the patient, the patient then fixing his eye on very specific image elements.
Weitere Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Further embodiments of the invention emerge from the subclaims.
Die Erfindung ist in einem Ausführungsbeispiel anhand der einzigen Figur näher erläutert, die eine teilweise geschnittene, sehr schematische Vorrichtung zur Unterstützung der Augenfixierung gemäß der Erfindung darstellt .The invention is explained in more detail in an exemplary embodiment with reference to the single figure, which represents a partially cut, very schematic device for supporting eye fixation according to the invention.
Die Vorrichtung weist eine Augenabdeckung 1 auf, die auf das nicht zu operierende Auge des Patienten aufgesetzt wird. Diese besteht aus einem Lichtquellengehause 2 und einem Abdecktuch 3. Das Gehäuse 2 ist in Richtung auf das Auge in der Figur nach unten offen und erweitert sich an dem unteren Ende zu einer Schale 4, die entsprechend anatomisch geformt ist, damit diese auf dem Gesicht des Patienten, das Auge umgebend, aufliegt. In einem Sockel 5 des Gehäuses 2 sind mehrere kleine annähernd punktformige Licht emittierende Dioden 6 in einem flächigen regelmäßigen orthogonalem Matrixraster angeordnet, denen eventuell eine Linse 7 vorgesetzt ist, so daß das Licht der LED's auf die Netzhaut des Patienten projiziert wird. Die Dioden 6 sind über ein Verbindungskabel 8 mit einer Wählschaltung 9 verbunden. Diese Wählschaltung 9 weist eine Stromquelle 10, eine Tastatur 11, eine Zählelektronik 12 und eine Anzeige 13 auf. Über die Stromquelle 10 werden die Dioden 6 versorgt, wobei durch die Wählschaltung sichergestellt ist, daß jeweils nur eine der Dioden leuchtet. Durch vier Richtungstasten 14, 15, 16 und 17 der Tastatur kann jeweils eine neue Diode eingeschaltet werden, die oberhalb, unterhalb, rechts bzw. links von der gerade eingeschalteten Diode 6 liegt, wobei diese mit dem Einschalten der neuen Diode ausgeschaltet wird. Die Eingaben über die Tastatur 11 werden in der Zahlelektronik 12 registriert und an die Anzeige 13 weitergegeben, auf der schematisch dargestellt ist, welche der Dioden 6 jeweils eingeschaltet ist. Die Anzeige kann z. B. ein Bild der Matrixanordnung der Dioden 6 sein; andere Darstellungen, z. B. die Lage der jeweils eingeschalteten Diode in Bezug auf den Augenmittelpunkt, sind natürlich möglich. Für gewisse Fälle ist es auch möglich, mehrere Dioden gleichzeitig einzuschalten.The device has an eye cover 1 which is placed on the patient's eye, which is not to be operated on. This consists of a light source housing 2 and a drape 3. The housing 2 is open towards the eye in the figure downwards and widens at the lower end to a shell 4, which is anatomically shaped so that this on the face of the The patient is lying around the eye. In a base 5 of the housing 2, a plurality of small, approximately point-shaped light-emitting diodes 6 are arranged in a flat, regular, orthogonal matrix grid, to which a lens 7 may be placed, so that the light from the LEDs is projected onto the patient's retina. The diodes 6 are connected to a selector circuit 9 via a connecting cable 8. This selector circuit 9 has a current source 10, a keyboard 11, electronic counter 12 and a display 13. The diodes 6 are supplied via the current source 10, the selection circuit ensuring that only one of the diodes is illuminated at a time. Four direction keys 14, 15, 16 and 17 of the keyboard can be used to switch on a new diode which is above, below, to the right or left of the diode 6 which has just been switched on, which is switched off when the new diode is switched on. The inputs via the keyboard 11 are registered in the number electronics 12 and forwarded to the display 13, which shows schematically which of the diodes 6 is switched on. The display can e.g. B. be an image of the array of diodes 6; other representations, e.g. B. the position of the diode that is switched on in relation to the center of the eye are of course possible. In certain cases it is also possible to switch on several diodes at the same time.
Anstelle oder zusätzlich zu den Richtungstasten 14, 15, 16 und 17 der Tastatur 11 kann die Wählschaltung 9 noch einen Joystick 18 bzw. einen Trackball 19 oder eine Computermaus 20 aufweisen, mit denen die jeweils einzuschaltenden Dioden freizügiger als mit den Richtungstasten angewählt werden können.Instead of or in addition to the direction keys 14, 15, 16 and 17 of the keyboard 11, the selector circuit 9 can also have a joystick 18 or a trackball 19 or a computer mouse 20 with which the diodes to be switched on can be selected more freely than with the direction keys.
Außerdem könnte anstelle von Licht emittierenden Dioden auch ein Bildschirm benutzt werden, z.B. ein Flüssigkristallbildschirm, so daß statt eines Lichtpunktes oder mehrerer Lichtpunkte auch ein beliebiges Bild als Fixationsobjekt dargeboten werden kann. Bestimmte Bildelemente können dann z.B. mit der Wähleinrichtung markiert werden, so daß der Patient dann diese Bildelemente fixieren kann. A screen could also be used instead of light emitting diodes, e.g. a liquid crystal screen, so that instead of a light spot or multiple light spots, any image can be presented as a fixation object. Certain picture elements can then e.g. be marked with the selection device so that the patient can then fix these picture elements.

Claims

Patentansprüche claims
1. Vorrichtung zur Unterstützung der Fixierung der Blickrichtung und damit der Lage eines menschlichen Auges während einer Operation an diesem Auge, gekennzeichnet durch1. Device for supporting the fixation of the viewing direction and thus the position of a human eye during an operation on this eye, characterized by
eine zumindest teilweise im Beobachtungskreis des nicht zu operierenden Auges des Patienten anordenbare Einrichtung, die eine in den Beoachtungsbereich des nicht zu operierenden Auges bringbare Anordnung von mindestens einem Bildpunkt aufweist, auf den der Blick des nicht zu operierenden Auges ausrichtbar ist.a device which can be arranged at least partially in the observation circle of the patient's eye which is not to be operated and which has an arrangement of at least one image point which can be brought into the observation area of the eye which is not to be operated, and to which the view of the eye which is not to be operated can be aligned.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Bildmuster leuchtende Bildelemente aufweist.2. Device according to claim 1, characterized in that the image pattern has luminous picture elements.
3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Wähleinrichtung (9) vorgesehen ist zur Auswahl einzelnder Bildelemente.3. Device according to one of the preceding claims, characterized in that a selection device (9) is provided for selecting individual picture elements.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung zum Darbieten des Bildmusters eine Projektionseinrichtung (1) ist, die als Bildelement zumindest eine aus unterschiedlichen Richtungen in das Auge fokussiert zu projlzierende Lichtquelle (6) aufweist, und daß mit der Wahleinrichtung (9) die Projektionsrichtung der zumindest einen Lichtquelle (6) vorgebbar ist.4. Device according to one of the preceding claims, characterized in that the means for presenting the image pattern is a projection device (1) having at least one light source (6) to be projected into the eye from different directions, and that with the Selection device (9) the projection direction of the at least one light source (6) can be predetermined.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Projektionseinrichtung die Lichtquelle fokussiert in das Auge projiziert, so daß auf der Netzauge ein scharfes Bild entsteht.5. The device according to claim 4, characterized in that the projection device projects the light source focused into the eye, so that a sharp image is formed on the net eye.
6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Projektionseinrichtung mehrere über die Wähl¬ einrichtung (9) selektiv ein- und ausschaltbare Licht¬ quellen (6) aufweist.6. The device according to claim 1, characterized in that the projection device has a plurality of light sources (6) which can be selectively switched on and off via the selection device (9).
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Lichtquellen (6) in einem regelmäßigem Raster, vorzugsweise einem orthogonalem Raster angeordnet sind.7. The device according to claim 6, characterized in that the light sources (6) are arranged in a regular grid, preferably an orthogonal grid.
8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Bildelemente Licht emittierende Dioden (6) sind.8. Device according to one of the preceding claims, characterized in that the picture elements are light-emitting diodes (6).
9. Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Wähleinrichtung (9) einen Richtungsgeber (11) zur Auswahl unterschiedlich gelegener Bildelemente aufweist.9. Device according to one of claims 2 to 8, characterized in that the selection device (9) has a direction sensor (11) for selecting differently located picture elements.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Richtungsgeber (11) mehrere Richtungstasten10. The device according to claim 9, characterized in that the direction transmitter (11) has several direction keys
(14, 15, 16, 17) aufweist.(14, 15, 16, 17).
11. Vorrichtung nach Anspruch 9, dadurch gekenn¬ zeichnet, daß der Richtungsgeber (11) einen Joystick, einen Trackball oder eine Computermaus aufweist.11. The device according to claim 9, characterized gekenn¬ characterized in that the direction transmitter (11) has a joystick, a trackball or a computer mouse.
12. Vorrichtung nach den Ansprüchen 9 bis 11, dadurch ge¬ kennzeichnet, daß der Richtungsgeber (11) mit einer Elektronik (12) zur Registrierung der gewählten Richtungen und diese Elektronik (12) mit einer12. Device according to claims 9 to 11, characterized ge indicates that the direction transmitter (11) with electronics (12) for registering the selected directions and this electronics (12) with one
Anzeige (13) zur Anzeige des angewählten Bildelementes verbunden ist.Display (13) is connected to display the selected picture element.
13. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung zur Darbietung des Bildmusters als Augenabdeckung (1) ausgebildet ist, die auf das Auge im wesentlichen lichtdicht, so daß kein Streu¬ licht in das Auge einfällt, aufsetzbar ist und daß in einem Gehäuse (2) mehrere Lichtquellen (6) ange¬ ordnet sind, denen eine Linse bzw. eine Linsenan¬ ordnung (7) vorgesetzt ist, um das Licht der jeweils eingeschalteten Lichtquelle (6) fokussiert auf die Netzhaut des Patienten zu projizieren.13. Device according to one of the preceding claims, characterized in that the device for the presentation of the image pattern is designed as an eye cover (1) which is essentially light-tight on the eye so that no stray light falls into the eye, can be put on and that in A plurality of light sources (6) are arranged in a housing (2) and a lens or lens arrangement (7) is placed in front of them in order to project the light from the light source (6) that is switched on in a focused manner onto the patient's retina.
14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß das Gehäuse (2) für die Lichtquellen (6) an seinem, dem Auge zugewandten Ende schalenformig erweitert ist (bei 4) .14. The apparatus according to claim 13, characterized in that the housing (2) for the light sources (6) at its end facing the eye is widened in a shell (at 4).
15. Vorrichtung nach Anspruch 13 oder 14, dadurch gekenn¬ zeichnet, daß das Gehäuse (2) für die Lichtquellen (6) mit einem Abdecktuch (3) überdeckt ist.15. The apparatus of claim 13 or 14, characterized gekenn¬ characterized in that the housing (2) for the light sources (6) is covered with a drape (3).
16. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die auf das nicht zu operierende Auge des Patienten anordenbare Einrichtung eine bildgebende Einrichtung, insbesondere ein Monitor mit entsprechender Optik ist, mit der dem Patienten Bildelemente dargeboten werden, auf die der Blick des nicht zu operierenden Auges ausrichtbar ist. 16. The apparatus according to claim 1, characterized in that the device which can be arranged on the patient's eye which is not to be operated is an imaging device, in particular a monitor with corresponding optics, with which the patient is presented with picture elements, to which the view of the person who is not to be operated Eye can be aligned.
PCT/DE1996/002060 1995-09-29 1996-09-27 Eye fixation aid WO1997013449A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19536590.9 1995-09-29
DE1995136590 DE19536590C2 (en) 1995-09-29 1995-09-29 Device for supporting the fixation of the direction of view of a human eye

Publications (3)

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WO1997013449A2 true WO1997013449A2 (en) 1997-04-17
WO1997013449A9 WO1997013449A9 (en) 1997-05-29
WO1997013449A3 WO1997013449A3 (en) 1997-08-14

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WO (1) WO1997013449A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151869A2 (en) * 1983-11-17 1985-08-21 L'Esperance, Francis A. Apparatus for ophthalmological surgery
EP0346846A1 (en) * 1988-06-13 1989-12-20 Konan Camera Research Institute Inc. Eye movement inspection device
WO1990014808A1 (en) * 1989-06-05 1990-12-13 Mount Sinai School Of Medicine Of The City University Of New York Apparatus and method for cornea marking
DE4442071A1 (en) * 1994-11-25 1995-06-29 Ulrich Dr Gehm Guide light source for laser eye treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151869A2 (en) * 1983-11-17 1985-08-21 L'Esperance, Francis A. Apparatus for ophthalmological surgery
EP0346846A1 (en) * 1988-06-13 1989-12-20 Konan Camera Research Institute Inc. Eye movement inspection device
WO1990014808A1 (en) * 1989-06-05 1990-12-13 Mount Sinai School Of Medicine Of The City University Of New York Apparatus and method for cornea marking
DE4442071A1 (en) * 1994-11-25 1995-06-29 Ulrich Dr Gehm Guide light source for laser eye treatment

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DE19536590C2 (en) 1997-09-25
WO1997013449A3 (en) 1997-08-14
DE19536590A1 (en) 1997-04-10

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