DE102005031687A1 - Method for a subjective ophthalmic diagnosis of a patient comprises using measurement spectacles which move freely on the patient's head and have lenses can be adjusted in optical values - Google Patents
Method for a subjective ophthalmic diagnosis of a patient comprises using measurement spectacles which move freely on the patient's head and have lenses can be adjusted in optical values Download PDFInfo
- Publication number
- DE102005031687A1 DE102005031687A1 DE200510031687 DE102005031687A DE102005031687A1 DE 102005031687 A1 DE102005031687 A1 DE 102005031687A1 DE 200510031687 DE200510031687 DE 200510031687 DE 102005031687 A DE102005031687 A DE 102005031687A DE 102005031687 A1 DE102005031687 A1 DE 102005031687A1
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- lenses
- housing
- lens
- patient
- deformation
- Prior art date
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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
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/04—Trial frames; Sets of lenses for use therewith
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Description
Im Gebiet der augenoptischen Diagnostik sind zwei Verfahren, die objektive und die subjektive Methode bekannt. Für das subjektive Messverfahren sind zwei Vorgänge gebräuchlich, die Messung mittels Phoropter und die Messung mittels Messbrille. Beide Verfahren versuchen, durch vor das Auge gesetzte Korrekturlinsen beim Patienten ein scharfes, verzerrungsfreies Abbild auf der Netzhaut zu erzeugen.in the Field of ophthalmic diagnostics are two procedures, the objective and the subjective method known. For the subjective measuring method are two processes in use, the measurement by phoropter and the measurement by measuring glasses. Both Try procedures through corrective lenses placed in front of the eye the patient has a sharp, distortion-free image on the retina to create.
Der Phoropter ist ein stationäres Gerät, bei dem der gesamte Satz an Korrekturlinsen im Gerät eingebaut ist und die Linsen nach Vorgabe durch den Untersuchenden automatisch vor das Auge platziert werden. Nachteilig bei diesem Verfahren ist die unbequeme Haltung des Patienten, der sich nach der Maschine richten muss und die Gefahr von Messfehlern bei unkorrekter Haltung des Kopfes.Of the Phoropter is a stationary one Device, in which the entire set of corrective lenses installed in the device is and the lenses as specified by the examiner automatically be placed in front of the eye. The disadvantage of this method is the uncomfortable attitude of the patient, looking after the machine and the danger of measuring errors in case of incorrect positioning Of the head.
Im Gegensatz dazu ist die Messbrille kaum schwerer als eine normale Brille, der Patient trägt sie wie eine normale Brille am Kopf, allerdings muss vom Behandelnden jede Korrekturlinse einzeln eingesetzt und ggf. positioniert werden.in the In contrast, the measuring goggles are hardly heavier than a normal one Glasses carrying patient They are like normal glasses on the head, but must be treated by the treating person Each correction lens is used individually and possibly positioned.
Der Erfindung liegt die Aufgabe zugrunde, die Nachteile der beiden Verfahren zu vermeiden und die Vorteile der beiden Verfahren zu nutzen. Erfindungsgemäß wird dies durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.Of the Invention is based on the object, the disadvantages of the two methods avoid and take advantage of the two procedures. According to the invention this is solved by the characterizing features of claim 1.
Hier wird erfindungsgemäß vorgeschlagen, die Messbrille mit einem für jedes Auge unabhängig voneinander in den optischen Werten verstellbaren Linsensystem auszustatten.Here is proposed according to the invention, the Measuring glasses with a for each eye independently To equip in the optical values adjustable lens system.
Als eine mögliche Ausführungsart einer Einrichtung zur Durchführung des Verfahrens sollen die Linsen durch eine optisch brechende Flüssigkeit (im folgenden Medium genannt) dargestellt und die erforderliche Geometrie der Linse durch entsprechende Verformung des das Medium umgebenden, wo erforderlich durchsichtigen, Gehäuses erreicht werden.When a possible embodiment a facility for implementation of the process, the lenses should by a refractive liquid (referred to below as the medium) and the required Geometry of the lens by appropriate deformation of the medium surrounding, where necessary transparent, housing can be achieved.
Als besonders vorteilhafte Ausführungsart wird vorgeschlagen, die sphärische, die zylindrische und die prismatische Korrekturlinse als jeweils einzelne, für sich verstellbare und hintereinander angeordnete Linsen auszuführen.When particularly advantageous embodiment is proposed the spherical, the cylindrical and the prismatic correction lens as respectively single, for to perform adjustable and successively arranged lenses.
Im nachfolgend beschriebenen Ausführungsbeispiel wird die Verformung des Gehäuses
- 1. der sphärischen
Linse vorteilhafterweise dadurch erreicht, dass eine oder beide
Zylinderflächen
des Gehäuses
elastisch sind und durch Änderung
des Druckes im Medium verformt werden (
1 , dort nur eine Fläche verformbar dargestellt), da der Druck konstant über die elastischen Flächen wirkt und diese dann die Form eines Kugelabschnittes einnehmen, - 2. der zylindrischen Linse vorteilhafterweise dadurch erreicht,
dass eine oder beide Stirnflächen der
quadratischen Säule
elastisch sind und durch Aufbringen eines Momentes an den zwei gegenüberliegenden
Rändern
verformt werden (
2 , dort nur eine Fläche verformbar dargestellt), da dann die Krümmung der elastischen Flächen konstant ist und diese dann die Form eines Zylinderabschnittes einnehmen, - 3. der prismatischen Linse vorteilhafterweise dadurch erreicht,
dass eine oder beide Stirnflächen der
quadratischen Säule
durch Aufbringen eines Momentes um ihre Mittelachse gekippt werden (
3 , dort nur eine Fläche verstellbar dargestellt), da dann das Volumen der Linse konstant bleibt.
- 1. The spherical lens advantageously achieved in that one or both cylindrical surfaces of the housing are elastic and are deformed by changing the pressure in the medium (
1 , there only one surface deformable shown), since the pressure acts constantly on the elastic surfaces and these then take the form of a spherical segment, - 2. The cylindrical lens is advantageously achieved in that one or both end faces of the square pillar are elastic and are deformed by applying a moment at the two opposite edges (
2 , where only one surface deformable shown), since then the curvature of the elastic surfaces is constant and then take the shape of a cylinder section, - 3. the prismatic lens is advantageously achieved by tilting one or both end faces of the square pillar by applying a moment about its central axis (
3 , there only an area shown adjustable), since then the volume of the lens remains constant.
Weiterhin wird vorgeschlagen, alle optischen Verstellungen und das Verdrehen der zylindrischen und der prismatischen Linsen motorisch, am besten über Schrittmotoren, und die Übertragung der Drehmomente, wo erforderlich, über flexible Wellen durchzuführen, wobei die Motoren in der Messbrille untergebracht sind.Farther It is proposed all optical adjustments and twisting the cylindrical and the prismatic lenses motor, preferably via stepper motors, and the transmission the torques where required to perform over flexible shafts, wherein the motors are housed in the measuring goggles.
Weiterhin wird vorgeschlagen, den Druck zur Einstellung der sphärischen Linse über einen Druckzylinder vorzunehmen, dessen Kolben elektromotorisch betätigt wird und der Druck über einen Drucksensor eingestellt werden kann.Farther it is proposed to adjust the pressure for adjusting the spherical Lens over to make a pressure cylinder whose piston is an electric motor actuated and the pressure is over a pressure sensor can be adjusted.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510031687 DE102005031687A1 (en) | 2005-07-05 | 2005-07-05 | Method for a subjective ophthalmic diagnosis of a patient comprises using measurement spectacles which move freely on the patient's head and have lenses can be adjusted in optical values |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510031687 DE102005031687A1 (en) | 2005-07-05 | 2005-07-05 | Method for a subjective ophthalmic diagnosis of a patient comprises using measurement spectacles which move freely on the patient's head and have lenses can be adjusted in optical values |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005031687A1 true DE102005031687A1 (en) | 2007-01-11 |
Family
ID=37562532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510031687 Ceased DE102005031687A1 (en) | 2005-07-05 | 2005-07-05 | Method for a subjective ophthalmic diagnosis of a patient comprises using measurement spectacles which move freely on the patient's head and have lenses can be adjusted in optical values |
Country Status (1)
Country | Link |
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DE (1) | DE102005031687A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1833416U (en) * | 1960-12-22 | 1961-06-22 | Rodenstock Optik G | DOUBLE WEDGE. |
US3588235A (en) * | 1968-09-03 | 1971-06-28 | Medinova Ab | Arrangement for determining the refraction of the human eye |
DE4217853A1 (en) * | 1992-05-29 | 1993-12-02 | Jenoptik Jena Gmbh | Device to determine subjective refraction of patient - has lens frame fixed to curve refraction index meter, having patient known optimal refraction set before final adjustment |
US5668620A (en) * | 1994-04-12 | 1997-09-16 | Kurtin; Stephen | Variable focal length lenses which have an arbitrarily shaped periphery |
DE4345070C2 (en) * | 1993-12-31 | 1998-10-29 | Peter Flore | Pneumatically or hydraulically adjustable convex lens |
-
2005
- 2005-07-05 DE DE200510031687 patent/DE102005031687A1/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1833416U (en) * | 1960-12-22 | 1961-06-22 | Rodenstock Optik G | DOUBLE WEDGE. |
US3588235A (en) * | 1968-09-03 | 1971-06-28 | Medinova Ab | Arrangement for determining the refraction of the human eye |
DE4217853A1 (en) * | 1992-05-29 | 1993-12-02 | Jenoptik Jena Gmbh | Device to determine subjective refraction of patient - has lens frame fixed to curve refraction index meter, having patient known optimal refraction set before final adjustment |
DE4345070C2 (en) * | 1993-12-31 | 1998-10-29 | Peter Flore | Pneumatically or hydraulically adjustable convex lens |
US5668620A (en) * | 1994-04-12 | 1997-09-16 | Kurtin; Stephen | Variable focal length lenses which have an arbitrarily shaped periphery |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |