DE202014011051U1 - Device for examining a patient's eye - Google Patents

Device for examining a patient's eye

Info

Publication number
DE202014011051U1
DE202014011051U1 DE202014011051.4U DE202014011051U DE202014011051U1 DE 202014011051 U1 DE202014011051 U1 DE 202014011051U1 DE 202014011051 U DE202014011051 U DE 202014011051U DE 202014011051 U1 DE202014011051 U1 DE 202014011051U1
Authority
DE
Germany
Prior art keywords
object area
eye
patient
oct
position
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.)
Active
Application number
DE202014011051.4U
Other languages
German (de)
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 Meditec AG
Original Assignee
Carl Zeiss Meditec AG
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 Meditec AG filed Critical Carl Zeiss Meditec AG
Priority to DE202014011051.4U priority Critical patent/DE202014011051U1/en
Publication of DE202014011051U1 publication Critical patent/DE202014011051U1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/102Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for optical coherence tomography [OCT]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37Surgical systems with images on a monitor during operation
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B21/00Microscopes
    • G02B21/0004Microscopes specially adapted for specific applications
    • G02B21/0012Surgical microscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37Surgical systems with images on a monitor during operation
    • A61B2090/373Surgical systems with images on a monitor during operation using light, e.g. by using optical scanners
    • A61B2090/3735Optical coherence tomography [OCT]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/25User interfaces for surgical systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery

Abstract

An apparatus for examining a patient's eye (16) with an OCT system (26) for scanning an object area volume (38) with an OCT scanning beam (28) in an object area (17) with the patient's eye (16) disposed therein; and means (40) for adjusting the position (P) of the object area volume (38) scanned with the OCT scanning beam (28) in the object area (17), characterized in that the means (40) for adjusting the position (P) of the object area volume (38) scanned with the OCT scanning beam (28) in the object area (17) has a display unit (70) for visualizing a model (77) of the patient's eye (16) in the object area (17) adapted to display the position (P) of the object area volume (38) scanned with the OCT scanning beam (28) in the object area (17) with respect to the model (77) of the patient's eye (16), the model (77) the patient's eye (16) is a three-dimensional CAD model of the patient's eye (16) adapted to a three-dimensional course of an optical density of the patient's eye (16) obtained by at least partial scanning of the patient's eye (16) with the OCT scanning beam (28).

Description

  • The invention relates to a device for examining a patient's eye with an OCT system for scanning an object area volume with an OCT scanning beam in an object area with the patient's eye disposed therein and with a device for adjusting the position (P) of the OCT system. Scanning light beam in the object area scanned object area volume. Moreover, the invention also relates to a computer program with program code means for visualizing the position (P) of an object area volume scanned with an OCT scanning light beam in an object area.
  • From the US 2014/0211155 A1 For example, a device for examining a patient's eye with an OCT system is known. The EP 0 815 801 A1 discloses an apparatus designed as a surgical microscope for examining a patient's eye with an OCT system that generates an OCT scanning beam of short coherent laser radiation. The OCT system contains an analysis unit for the evaluation of interference signals. It comprises a device for scanning the OCT scanning beam path with two scanning mirrors, which can be adjusted by two axes of movement. The OCT scanning beam path in the surgical microscope is coupled via a splitter mirror into the illumination beam path of the surgical microscope. He is guided with this through the microscope main objective to an object area in a patient's eye.
  • An OCT system uses optical coherence tomography to enable the non-invasive measurement and visualization of structures within a tissue. In particular, as an optical imaging technique, optical coherence tomography allows to produce slice or volume images of micrometer-resolution biological tissue. A corresponding OCT system comprises a source of temporally incoherent and spatially coherent light with a coherence length I c , which is supplied to a sample beam path and a reference beam path. The sample beam path is directed to the tissue to be examined. In the OCT system, laser radiation, which is reflected back into the sample beam path due to scattering centers in the tissue, is superimposed with laser radiation from the reference beam path. The overlay creates an interference signal. From this interference signal, the position of scattering centers for the laser radiation in the examined tissue can be determined.
  • For OCT systems, the construction principle of "Time-Domain OCT" and "Fourier-Domain OCT" is known.
  • The structure of a "time-domain OCT" is for example in the US 5,321,501 based on 1a on Sp. 5, Z. 40 - Sp. 11, Z. 10. In such a system, the optical path length of the reference beam path is continuously varied via a fast-moving reference mirror. The light from the sample and reference beam path is superimposed on a photodetector. When the optical path lengths of the sample and reference beam paths coincide, an interference signal is produced on the photodetector.
  • A "Fourier-Domain OCT" is for example in the WO 2006/10544 A1 explained. In order to measure the optical path length of a sample beam path, in turn light from the sample beam path light is superimposed from a reference beam path. In contrast to a "time-domain OCT", however, for a measurement of the optical path length of the sample beam path, the light from sample and reference beam path is not fed directly to a detector, but first spectrally dissected by means of a spectrometer. The thus generated spectral intensity of the superimposed signal from the sample and reference beam path is then detected by a detector. By evaluating the detector signal, in turn, the optical path length of the sample beam path can be determined.
  • Although known OCT systems make it possible, by adjusting the length of the reference beam path in the direction of the optical axis of the OCT scanning light beam, to displace the scanning zone detected with the OCT scanning light beam in an object area and manually scanning the OCT scanning light beam perpendicular to the optical axis To move directions over the object area volume. In this way, structures of a patient's eye such. For example, the retina, which has a low depth extension, can be visualized with good resolution and high contrast. However, where the structures of the patient's eye have a large area and depth extent, such as in the area of the cornea, capsule sac or sclera, it is very difficult for an observer, such as an ophthalmologist or surgeon, to adjust the length of the reference beam path in The OCT system reliably detects the physiological structures. To find and recognize the physiological structures of the cornea, the sclera and the capsular bag with an OCT system, observers rely so far solely on their experience and their anatomical knowledge.
  • Although it is possible to computationally assemble a large number of object area volumes detected with an OCT scanning light beam of high resolution from an object, and thus to form a three-dimensional panoramic image of an extended one To visualize the area of an object. For this, however, it is necessary to record many measurement data. This is very time consuming and makes it possible to examine a moving object in real time, e.g. B. difficult in a current operation operator.
  • The object of the invention is to enable an operator to clearly examine selected areas of a patient's eye with the OCT scanning light beams of an OCT system.
  • This object is achieved by the device specified in claims 1 and 4 and the specified in claim 9 computer program. Advantageous embodiments of the invention are indicated in the dependent claims.
  • By adjusting the position (P) of an object area volume scanned with the OCT scanning light beam in the object area, the invention means adjusting the three-dimensional position and / or orientation of such a volume scannable with an OCT scanning light beam.
  • The invention is based in particular on the idea that OCT systems with suitable sensor technology are capable of detecting an extended object area with OCT scanning light beams rapidly and with a high resolution.
  • For examining an object with an OCT scanning light beam from an OCT system, the invention proposes that the position (P) of the object area volume scanned with the OCT scanning light beam in the object area be set with a device comprising a display unit for visualizing a Model of the object in the object area configured to display the position (P) of the object area volume scanned with the OCT scanning beam in the object area with respect to the model of the object. This measure allows an operator to visually and immediately perceive an object area volume scanned with an OCT scanning light beam in an object.
  • A model of an object arranged in the object area in the sense of the invention is a three-dimensional data record with information about an actual or assumed spatial extent of three-dimensional structures of the object.
  • As an alternative or in addition to the indications of the object area volume indicated above, the invention proposes that the position (P) of the object area volume scanned with the OCT scanning light beam in the object area is set with a device which is a functional unit for detecting a position and / or orientation (X, φ) of the object in a device-fixed coordinate system and having a computer unit which calculates from the detected position and / or orientation (X, φ) of the object, a control signal supplied to the OCT system (S N ) to a Displacement (ΔX, Δφ) of the object ( 16 ) track the OCT scanning beam to the object.
  • The detection of the position and / or orientation of an object in the present case means the determination of the coordinates of a coordinate system fixed to the object in a device-fixed coordinate system of a device, with respect to which the object can be displaced. The coordinate system of the object and / or the coordinate system of the device can be a three-dimensional coordinate system or else only a two-dimensional coordinate system.
  • A model of an object arranged in the object area within the meaning of the invention can e.g. B. be determined in a diagnostic device spatial structure of the object or a part of the object. Such a model of an object may in particular be a three-dimensional profile of an optical density of the object obtained by at least partial scanning of the object with the OCT scanning light beam. However, a corresponding model of an object can also be an abstract three-dimensional structure. In particular, a model of an object in the sense of the invention may be a three-dimensional CAD model of the object. A model of an object in the sense of the invention can also be a three-dimensional CAD model adapted to a spatial structure of the object determined in a diagnostic device or a three-dimensional CAD model adapted to a spatial structure of a part of the object determined in a diagnostic device. For example, a model of an object according to the invention may be a sphere or an individual, patient-specific simulation of the eyeball of a patient's eye. In particular, the model of an object in the sense of the invention may be an average eye of Gullstrad, which is approximately in the ABC of the optics, publishing house Werner Dausien, Hanau / Main 1961 on the sides 83-85 is described. Here, for an "exact eye model" and a "simplified eye model" the optically effective surfaces, their curvature and distance and the refractive index of "optical elements" indicated for the imaging beam in good approximation to the natural conditions in an average, healthy person with emmetropic eye corresponds. In the "exact eye model" according to Gullstrad or the "simplified eye model", distances or curvatures are not perceived as predetermined but as free parameters that can be adapted to a specific patient's eye it is possible to describe a real patient's eye with such a model.
  • The means for controlling the OCT Abtastlichtstrahls preferably includes an operator operable control member so as to generate a control signal (S V ) for the displacement of the scanned with the OCT scanning object area volume for the OCT system.
  • The controller can do this z. B. have a movably mounted on a base for moving in three translational and / or three rotational degrees of freedom of movement control, which is displaceable by an operator with the fingers of a hand relative to the base to the control signal (S V ) for moving the Adjusting the position (P) of the object area volume scanned with the OCT scanning beam by displacing the operating element relative to the base.
  • However, the control element can also have a surgical instrument which can be displaced in the object area. Then, with a position detection system, the position (P ') of a portion of the surgical instrument disposed in the object area is detected and then the control signal (S V ) for shifting the position (P) of the OCT scanning beam (FIG. 28 ) scanned object area volume set by moving the operation instrument in the object area.
  • In the following the invention will be explained in more detail with reference to the embodiments schematically illustrated in the drawing.
  • Show it:
  • 1 a device having an OCT system for examining an object;
  • 2 an enlarged view of an object area volume scanned with an OCT scanning light beam of the OCT system in the object;
  • 3 a user interface displayed on a display of the device for monitoring and visualizing the OCT scanning light beam;
  • 4 the building blocks of a computer program in a computing purity in the device
  • 5a a display window of the user interface with a display of the scanned with an OCT Abtastlichtstrahl object area in a first operating state of the device;
  • 5b a display window of the user interface with a display of the scanned with an OCT Abtastlichtstrahl object area in a second operating state of the device; and
  • 6 another device with an OCT system for examining an object.
  • The in the 1 shown device for examining an object 16 with an OCT scanning beam 28 is in a surgical microscope designed for ophthalmology 10 (Ophthalmic surgical microscope) integrated. The surgical microscope 10 has a stereoscopic observation beam path 12 . 14 which is the investigation of an object 16 in the form of a patient's eye through a microscope main objective 18 through in an object area 17 allows. The surgical microscope 10 has a further zoom system 20 and an eyepiece look 22 , It includes a lighting device 24 which the object area 17 through the microscope main objective 18 through for the stereoscopic visualization of the object 16 in the eyepiece insight 22 illuminated with illumination light.
  • The device for examining an object 16 with the OCT scanning beam 28 in the surgical microscope 10 contains an OCT system 26 , The OCT system 26 represents the scanning beam 28 with short-coherent light ready via adjustable scanning mirror 30 . 32 and steel dividers 34 and 36 through the microscope main objective 18 through to the object 16 into an object area volume 38 is guided. That in the object area volume 38 scattered light of the scanning beam 28 at least partially reaches the same light path to the OCT system 26 back. In the OCT system 26 Then the path of the scanning light is compared with a reference distance. This allows the exact location of scattering centers in the object 16 In particular, the position of optically active surfaces are detected with an accuracy which corresponds to the coherence length l c of the short-coherent light in the scanning beam 28 equivalent.
  • In the surgical microscope 10 is there a control device 40 with a computer unit 42 for controlling the OCT scanning beam 28 and adjusting the spatial extent and the position P, ie the position and orientation of the with the OCT scanning beam 28 scanned object area volume 38 in a device-fixed coordinate system 54 ,
  • The computer unit 42 has a program memory in which a model of the object 16 is stored in the form of CAD data based on an examination of the object in a diagnostic device, which is not further shown.
  • In the control device 40 is there a functional unit 41 with an image capture device 44 with which the picture 46 of the object 16 in shape the patient's eye can be detected in real time. The functional unit 41 has a computer unit 45 which has a program memory with a computer program which contains an image evaluation routine as image evaluation means. The image evaluation routine compares from a reference image 52 of the object 16 in which the location and orientation of the object 16 in one to the surgical microscope 10 and therefore the OCT system 26 fixed coordinate system 54 is known by evaluating the structures of the sclera 19 and / or the iris 21 of the object 16 with the image capture device 44 real-time, consecutively captured images 46 to get from this comparison the position and orientation X, φ of the coordinate system 50 of the object 16 in the object plane of the surgical microscope 10 in one to the surgical microscope 10 and therefore the OCT system 26 fixed coordinate system 54 specify. The program memory of the computer unit 45 also contains a computer program for controlling the OCT system 26 to deal with the OCT system 26 at regular intervals the distance z of the object 16 from the microscope main objective 18 to determine. The computer unit 45 continuously calculates the location of the object 16 fixed coordinate system 54 in the direction of the optical axis 78 of the surgical microscope.
  • The coordinate system 50 is present a three-dimensional coordinate system. In an alternative advantageous embodiment of the invention, the coordinate system 50 but also be a two-dimensional coordinate system. In this case, the functional unit determines 41 a shift of the coordinate origin of the coordinate system 50 in the object plane of the surgical microscope 10 and a rotation of the coordinate system 50 in the to the optical axis 78 vertical object plane around the optical axis 78 ,
  • The computer program in the program memory of the computer unit 42 further includes a control routine which sets the reference length for the OCT scanning beam 28 and the adjustment of the adjustable scanning mirrors 30 . 32 for scanning the object area volume 38 in the object area 17 with the object 16 indicates.
  • For adjusting with the OCT scanning beam 28 scanned object area volume 38 exist in the controller 40 an operable by an operator control member 64 , The controlling body 64 is designed as a 3D mouse, z. Eg as 3Dconnexion SpaceNavigator 3D mouse from the company 3Dconnexion. The controlling body 64 indicates one at a base 67 for moving in three translational 66a . 66b . 66c and / or three rotatory ones 68a . 68b . 68c Movement degrees of freedom movably mounted control element 65 on. The operating element 65 can be done by an operator with the fingers of one hand relative to the base 67 be relocated. In this case, a control signal S V for the displacement of the position P of the with the OCT scanning beam 28 scanned object area volume 38 set.
  • The control device 40 for controlling the OCT scanning beam 28 contains one with the computer unit 42 connected display unit 70 in the form of a display for displaying a user interface in which the OCT scanning beam 28 in the object area 17 scanned object area volumes 38 can be visualized.
  • The 2 is an enlarged view of a cuboid object area volume 38 , the Z. B. edges b, t and h can have the following dimensions: b ≈ 3 mm, t ≈ 14 mm and h ≈ 2 mm.
  • With the OCT scanning light beam, the OCT scanning light can scatter scattering centers at a zonal scanning location 66 be recorded. The dimensions of the OCT scanning light of an OCT system in an object resolvable zones are of the order of the wavelength of the OCT scanning light. For scanning the object area volume 38 becomes the OCT scanning beam 28 scanned and the reference length in the OCT system 26 changed. The sample location 66 is doing according to an object area volume Abtastscan 39 relocated. A control routine for scanning the object space volume 38 is combined with a program routine of the computer program that an operator at an input interface 60 the computer unit 42 adjusting the height h, the width b and the depth t of the object area volume 38 allows. For the scanning locations 66 of the OCT scanning beam 28 in the surgical microscope 10 can different histories for the object area volume scanning scan 39 be set.
  • With the computer program in the program memory of the computer unit 42 becomes the object area volume 38 on the display unit 70 along with a model of the object 16 visualized. This model of the object is in the present case a sphere with an arrow. This sphere corresponds to an eyeball of an average patient's eye. The arrow symbolizes the line of sight of the patient's eye and indicates a position of the center of the cornea. The in the functional unit 41 determined data on the location and orientation of the object 16 become the computer unit 42 fed. This calculates display data for the model of the object, in order to set the scanned object area volume set with the control routine 38 due to the determined position and orientation of the object 16 in the to the surgical microscope 10 fixed coordinate system 54 together with the means of the OCT scanning beam 28 of the OCT system 26 sampled Object area volume 38 in one to the surgical microscope 10 referenced coordinate system 50 to represent correctly.
  • The 3 is a representation of a user interface 72 the display unit 70 in which there are display windows 74a . 74b . 74c and 74d gives. The display window 74a shows one with the image capture device 44 captured view of the object area 17 with the means of the OCT scanning beam 28 scanned object area volume 38 in the to the surgical microscope 10 fixed coordinate system 54 ,
  • The display window 74b visualizes a model 77 of the object 16 in the to the surgical microscope 10 fixed coordinate system 54 with the optical axis 78 of the microscope main objective 18 of the surgical microscope 10 and with the OCT scanning beam 28 in the coordinate system fixed to the device 54 ,
  • In the display window 74c is a so-called B-scan of the object 16 with the OCT scanning beam in the in the display window 74a indicated direction 80 to see. The display window 74d shows a B-scan of the object 16 with the OCT scanning beam in the in the display window 74a indicated direction 82 ,
  • The 4 explains the building blocks of a computer program in the computer unit 42 to the object area volume 38 with the model 77 of the object 16 in the to the surgical microscope 10 fixed coordinate system 54 to visualize. The computer program has as building block 85 a routine for the control of the control, which the control signals of the trained as a 3D mouse controller 64 be supplied and with the appropriate control signals for the OCT system 26 in the device for examining an object 16 with an OCT scanning beam 28 in the surgical microscope 10 be generated. The computer program has an initialization level 86 on that the OCT system 26 in an initialization phase controls to use the OCT system 26 one or more three-dimensional images of an object 16 take. In doing so, the location and orientation of the object 16 in one to the OCT system 26 device-fixed coordinate system 54 determined. The acquired OCT data set then becomes a model of the object 16 generated. This model of the object 16 can z. Example, be a CAD model of the object or a model in the form of an object reconstruction.
  • The object 16 and the object area volume 38 are then using a graphics routine 88 in the device-fixed coordinate system 54 in the right place and with the right orientation in a 3D scene with a cube structure 90 represented by the position X and orientation φ of the device-fixed coordinate system 54 is shown.
  • The control device 40 in the surgical microscope 10 allows an operating mode in which the object area volume 38 the movements of the object 16 tracked so that the object area volume 38 in that to the object 16 fixed coordinate system 50 is stationary. The setting of the OCT scanning beam 28 in the surgical microscope 10 So here is a movement of the object 16 changed, thereby causing an undesirable relative displacement of the OCT scanning beam 28 scanned object area volume 38 in the coordinate system fixed to the device 54 compensate. For this purpose, the computer unit 42 in the facility 40 for adjusting the position P of the OCT scanning beam 28 in the object area 17 scanned object area volume 38 the detected displacement ΔX, Δφ of the object 16 fed. The computer unit 42 From this, a control signal S N supplied to the OCT system is then calculated, which at a displacement ΔX, Δφ of the object 16 the OCT scanning beam 28 the object 16 readjusts.
  • The computer program in the computer unit 42 has a tracking routine for this 92 on top of that with the functional unit 41 determined data on the location and orientation of the object 16 be fed in real time. The tracking routine 92 then update the using the graphics routine 88 displayed position and orientation of the object area volume 38 , The object 16 and that with the OCT scanning beam 28 scanned object area volumes 38 can do so by using the graphics routine 88 visualized correctly to an observer.
  • The 5a shows another display window 74b ' the user interface 72 the display unit 70 with an indication of that with an OCT scanning beam 28 scanned object area 17 in a first operating state with the main body 84 of the surgical microscope 10 in that with the OCT scanning beam 28 scanned object area volumes 38 in a front portion of the object designed as a patient's eye 16 is localized.
  • The 5b shows a display window 74b '' the user interface 72 the display unit 70 with an indication of that with an OCT scanning beam 28 scanned object area 17 in another operating state, in which that with the OCT-Abtaststrahl 28 scanned object area volumes 38 in a rear section of the object 16 located.
  • The in the 6 Another ophthalmic device shown is also a surgical microscope 100 , As far as the modules and elements of the surgical microscope 100 the assemblies and Elements of the above with reference to 1 . 2 . 3 . 4 and 5a such as 5b These are in the 6 indicated by the same reference numerals as in the aforementioned figures.
  • For adjusting with the OCT scanning beam 28 scanned object area 17 exist in the controller 40 for controlling the OCT scanning beam 28 an operable by an operator control member 162 in the form of a surgical instrument located in the object area of the surgical microscope 10 can be relocated. With the image capture device 44 in the surgical microscope 100 becomes the location of the section 164 of the controller 162 recorded and by means of the computer unit 42 in a control signal for the setting of the OCT scanning beam scanned object area volume 38 implemented.
  • Around the object area volume 38 with the model 77 of the object 16 in the to the surgical microscope 10 fixed coordinate system 54 to visualize contains the computer program in the computer unit 42 here one in the 4 shown another tracking routine 94 that the building block 85 with the routine for the control control signals for controlling the location of the object area volume 38 supplies.
  • It should be noted that a device according to the invention can also have combinations and subcombinations of features of the embodiments described above. A device according to the invention can be integrated not only in a surgical microscope but also in an ophthalmoscope or another examination device.
  • In summary, the following preferred features in particular should be noted: A device 10 . 100 for examining an object 16 contains an OCT system 26 for scanning one in an object area 17 arranged object area volume 38 with an OCT scanning beam 28 , In the device 10 . 100 is there a facility 40 for adjusting the position P of the OCT scanning beam 28 in the object area 17 scanned object area volume 38 , The device 40 for adjusting the position P of the OCT scanning beam 28 in the object area 17 scanned object area volume 38 has a display unit 70 for visualizing a model 77 of the object 16 in the object area 17 on, with the position P of the OCT-Abtaststrahl 28 in the object area 17 scanned object area volume 38 in terms of the model 77 of the object 16 can be displayed. Alternatively or additionally, the device 40 for adjusting the position P of the OCT scanning beam 28 in the object area 17 scanned object area volume 38 also a functional unit 41 for detecting a position and / or orientation X, φ of the object 16 and a computer unit 42 contain, from the detected position and / or orientation X, φ of the object 16 a control signal S supplied to the OCT system is calculated to be at a displacement ΔX, Δφ of the object 16 the OCT scanning beam 28 the object 16 to track.
  • LIST OF REFERENCE NUMBERS
  • 10
     Surgical microscope (examination device)
    12
     Observation beam path
    14
     Observation beam path
    16
     object
    17
     Property area
    18
     Microscope main objective
    19
     sclera
    20
     Zoom system
    21
     iris
    22
     eyepiece
    24
     lighting device
    26
     OCT system
    28
     OCT scanning beam
    30
     scanning mirror
    32
     scanning mirror
    34
     beam splitter
    36
     beam splitter
    38
     Object area volume
    39
     Object area volume Abtastscan
    40
     control device
    42
     computer unit
    44
     Image capture device
    46
     image
    50
     coordinate system
    52
     reference image
    54
     coordinate system
    60
     Input interface
    64
     control element
    65
     operating element
    66
     scanning location
    66a, 66b, 66c
     translational freedom of movement
    68a, 68b, 68c
     rotational freedom of movement
    70
     display unit
    72
     user interface
    74a, 74b, 74c, 74d, 74b ', 74b "
    display window
    77
     model
    78
     optical axis
    80
     direction
    82
     direction
    84
     body
    85
     building block
    86
     initialization
    88
     graphic routine
    90
     cube structure
    92
     tracking routine
    100
     Surgical microscope (examination device)
    162
     control element
    164
     section
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • US 2014/0211155 A1 [0002]
    • EP 0815801 A1 [0002]
    • US 5,321,101 [0005]
    • WO 2006/10544 A1 [0006]
  • Cited non-patent literature
    • ABC of optics, publishing house Werner Dausien, Hanau / Main 1961 on the sides 83-85 [0017]

Claims (9)

  1. Device for examining a patient's eye ( 16 ) with an OCT system ( 26 ) for scanning an object area volume ( 38 ) with an OCT scanning beam ( 28 ) in an object area ( 17 ) with the patient's eye ( 16 ); and with a device ( 40 ) for adjusting the position (P) of the with the OCT scanning beam ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ), characterized in that the device ( 40 ) for adjusting the position (P) of the with the OCT scanning beam ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) a display unit ( 70 ) for visualizing a model ( 77 ) of the patient's eye ( 16 ) in the object area ( 17 ), which is adapted to the position (P) of the with the OCT-Abtaststrahl ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) in relation to the model ( 77 ) of the patient's eye ( 16 ), the model ( 77 ) of the patient's eye ( 16 ) to a by at least partial palpation of the patient's eye ( 16 ) with the OCT scanning beam ( 28 ) obtained three-dimensional course of an optical density of the patient's eye ( 16 ) Adapted three-dimensional CAD model of the patient's eye ( 16 ).
  2. Device according to claim 1, characterized in that the device ( 40 ) for controlling the OCT scanning beam ( 28 ) a controllable by an operator control member ( 64 . 162 ) for the OCT system ( 26 ) a control signal (S V ) for the displacement of the with the OCT-Abtaststrahl ( 28 ) scanned object area volume ( 38 ) to create.
  3. Apparatus according to claim 2, characterized in that the control member ( 162 ) in the object area ( 17 ) has a displaceable operating instrument which is connected to a position detection system for detecting the position (P ') of an object in the object area ( 17 ) arranged portion ( 164 ) of the surgical instrument is combined in order to move by displacing the surgical instrument in the object area ( 17 ) the control signal (S V ) for shifting the position (P) of the with the OCT scanning beam ( 28 ) scanned object area volume ( 38 ).
  4. Device for examining a patient's eye ( 16 ) with an OCT system ( 26 ) for scanning an object area volume ( 38 ) with an OCT scanning beam ( 28 ) in an object area ( 17 ) with the patient's eye ( 16 ); and with a device ( 40 ) for adjusting the position (P) of the with the OCT scanning beam ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ), characterized in that the device ( 40 ) for adjusting the position (P) of the with the OCT scanning beam ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) a display unit ( 70 ) for visualizing a model ( 77 ) of the patient's eye ( 16 ) in the object area ( 17 ), which is adapted to the position (P) of the with the OCT-Abtaststrahl ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) in relation to the model ( 77 ) of the patient's eye ( 16 ), the device ( 40 ) for controlling the OCT scanning beam ( 28 ) a controllable by an operator control member ( 64 . 162 ) for the OCT system ( 26 ) a control signal (S V ) for the displacement of the with the OCT-Abtaststrahl ( 28 ) scanned object area volume ( 38 ) to create; and where the controller ( 162 ) in the object area ( 17 ) having a position detecting system for detecting the position (P ') of one in the object area ( 17 ) arranged portion ( 164 ) of the surgical instrument is combined in order to move by displacing the surgical instrument in the object area ( 17 ) the control signal (S V ) for shifting the position (P) of the with the OCT scanning beam ( 28 ) scanned object area volume ( 38 ).
  5. Device according to claim 4, characterized in that the model ( 77 ) of the patient's eye ( 16 ) to a by at least partial palpation of the patient's eye ( 16 ) with the OCT scanning beam ( 28 ) obtained three-dimensional course of an optical density of the patient's eye ( 16 ) Adapted three-dimensional CAD model of the patient's eye ( 16 ).
  6. Device according to one of claims 2 to 5, characterized in that the control member ( 64 ) on a base ( 67 ) for moving into three translational ( 66a . 66b . 66c ) and / or three rotational ( 68a . 68b . 68c ) Freedom of movement movably mounted control element ( 65 ) by an operator with the fingers of one hand relative to the base ( 67 ) is relocatable to the Control signal (S V ) for shifting the position (P) of the with the OCT scanning beam ( 28 ) scanned object area volume ( 38 ) by moving the control element ( 65 ) relative to the base ( 67 ).
  7. Apparatus according to claim 6, characterized in that the control member ( 162 ) in the object area ( 17 ) has a displaceable surgical instrument and a position detection system ( 170 ) for detecting the position (P ') of one in the object area ( 17 ) arranged portion ( 164 ) of the surgical instrument is provided in order to control the control signal (S V ) for shifting the position (P) of the OCT scanning beam ( 28 ) scanned object area volume ( 38 ) by displacing the operation instrument in the object area ( 17 ).
  8. Device according to one of claims 1 to 7, characterized in that the device ( 40 ) for adjusting the position (P) of the with the OCT scanning beam ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) a functional unit ( 41 ) for detecting a position and / or orientation (X, φ) of the patient's eye ( 16 ) in a device-fixed coordinate system ( 54 ) and a computer unit ( 42 ), which consists of the detected position and / or orientation (X, φ) of the patient's eye ( 16 ) to the OCT system ( 26 ) supplied control signal (S N ) to a displacement (ΔX, Δφ) of the patient's eye ( 16 ) the OCT scanning beam ( 28 ) the object ( 16 ) track.
  9. Computer program with program code means, set up for carrying out the following method, when the computer program is stored on a computer unit ( 42 ): visualizing the position (P) of one with an OCT scanning beam ( 28 ) scanned object area volume ( 38 ) in an object area ( 17 ) with a patient's eye ( 16 ), with the OCT ( 28 ) in the object area ( 17 ) scanned object area volumes ( 38 ) with a model ( 77 ) of the patient's eye ( 16 ) and the position (P) of the with the OCT-Abtaststrahl ( 28 ) in the object area ( 17 ) scanned object area volume ( 38 ) in relation to the model ( 77 ) of the patient's eye ( 16 ) and the model ( 77 ) of the patient's eye ( 16 ) to a by at least partial palpation of the patient's eye ( 16 ) with the OCT scanning beam ( 28 ) obtained three-dimensional course of an optical density of the patient's eye ( 16 ) Adapted three-dimensional CAD model of the patient's eye ( 16 ).
DE202014011051.4U 2014-11-05 2014-11-05 Device for examining a patient's eye Active DE202014011051U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202014011051.4U DE202014011051U1 (en) 2014-11-05 2014-11-05 Device for examining a patient's eye

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202014011051.4U DE202014011051U1 (en) 2014-11-05 2014-11-05 Device for examining a patient's eye

Publications (1)

Publication Number Publication Date
DE202014011051U1 true DE202014011051U1 (en) 2017-07-26

Family

ID=59580545

Family Applications (1)

Application Number Title Priority Date Filing Date
DE202014011051.4U Active DE202014011051U1 (en) 2014-11-05 2014-11-05 Device for examining a patient's eye

Country Status (1)

Country Link
DE (1) DE202014011051U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018100453A1 (en) * 2016-11-30 2018-06-07 Novartis Ag Visualization systems and methods for optimized optical coherence tomography

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321501A (en) 1991-04-29 1994-06-14 Massachusetts Institute Of Technology Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample
EP0815801A2 (en) 1996-06-25 1998-01-07 Carl Zeiss OCT-assisted surgical microscope with multi-coordinate manipulator
WO2006010544A2 (en) 2004-07-29 2006-02-02 Actelion Pharmaceuticals Ltd 1, 1a, 5, 5a-tetrahydro-3-thia-cyclopropa’a! pentalenes: tricyclic thiophene derivatives as s1p1/edg1 receptor agonists
US20140211155A1 (en) 2013-01-31 2014-07-31 Canon Kabushiki Kaisha Optical coherence tomographic imaging apparatus and method for controlling the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321501A (en) 1991-04-29 1994-06-14 Massachusetts Institute Of Technology Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample
EP0815801A2 (en) 1996-06-25 1998-01-07 Carl Zeiss OCT-assisted surgical microscope with multi-coordinate manipulator
WO2006010544A2 (en) 2004-07-29 2006-02-02 Actelion Pharmaceuticals Ltd 1, 1a, 5, 5a-tetrahydro-3-thia-cyclopropa’a! pentalenes: tricyclic thiophene derivatives as s1p1/edg1 receptor agonists
US20140211155A1 (en) 2013-01-31 2014-07-31 Canon Kabushiki Kaisha Optical coherence tomographic imaging apparatus and method for controlling the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ABC der Optik, Verlag Werner Dausien, Hanau/Main 1961 auf den Seiten 83–85

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018100453A1 (en) * 2016-11-30 2018-06-07 Novartis Ag Visualization systems and methods for optimized optical coherence tomography
US10408601B2 (en) 2016-11-30 2019-09-10 Novartis Ag Visualization systems and methods for optimized optical coherence tomography

Similar Documents

Publication Publication Date Title
US5054907A (en) Ophthalmic diagnostic apparatus and method
US7370966B2 (en) Opthalmologic apparatus
US8096658B2 (en) Fundus oculi observation device and program for controlling the same
AU2008341543B2 (en) Dual scheimpflug system for three- dimensional analysis of an eye
JP5324839B2 (en) Optical image measuring device
US6763259B1 (en) Surgical system supported by optical coherence tomography
US9681803B2 (en) Method of observing a three-dimensional image of examinee's eye
JP5026741B2 (en) Operation method of ophthalmic examination apparatus
JP2975306B2 (en) Imaging apparatus and method, and slit lamp assembly of the anterior segment
US20140285811A1 (en) Optical coherence tomography with multiple sample arms
US7980697B2 (en) Fundus oculi observation device and ophthalmic image display device
CN101568293B (en) Method and apparatus for retinal diagnosis
US10016243B2 (en) Systems and methods for assisted surgical navigation
EP1225454B1 (en) Method and device for fixing a position
WO2010119632A1 (en) Eyeground observation device
EP1550025A1 (en) Control of robotic manipulation
JP4668204B2 (en) Ophthalmic binocular wavefront measurement system
US20090103050A1 (en) Optical instrument alignment system
CA2704350C (en) A method for performing visual acuity testing
JP5570125B2 (en) Optical tomography system
JPH11508780A (en) Using the method and apparatus and the method for its parallel detect visual information
WO2010125746A1 (en) Eyeground observation device
US20150342460A1 (en) Imaging and visualization systems, instruments, and methods using optical coherence tomography
Ehlers et al. Visualization of real-time intraoperative maneuvers with a microscope-mounted spectral domain optical coherence tomography system
US8540368B2 (en) Ophthalmic photographing apparatus

Legal Events

Date Code Title Description
R207 Utility model specification
R150 Term of protection extended to 6 years