Abstract: A method and device are for generating and displaying a map of a brain operating field, brain tissue areas associated with a stimulated brain function being marked in the map. In the method, during a measurement cycle a stimulation of a brain function is effected and a stimulation image of the brain operating field with the stimulated brain function is recorded, a reference image without the stimulated brain function is recorded, the stimulation image and the reference image are used to generate the map, and the map is displayed on a display. A plurality of cycles are performed. A new map is generated after each cycle following the first cycle. In order to generate the new map, the stimulation and reference images of one or more preceding cycles are used besides the images recorded in the cycle just carried out. At least the new map is displayed after each cycle.

Abstract: An eye surgery system includes an operating microscope having at least one camera, a data memory, a pattern generator, and a display apparatus. The operating microscope presents a microscope image of an eye, and the at least one camera records a camera image of the eye. The data memory stores data that represent at least one predetermined position, relative to the eye, of a trocar to be inserted into the eye. The pattern generator generates a pattern representing the predetermined position of the trocar on the basis of the data stored in the data memory and the camera image recorded by the camera, and the display apparatus overlays the pattern produced by the pattern generator on the microscope image of the eye.

Abstract: A method and device are for generating and displaying a map of a brain operating field, brain tissue areas associated with a stimulated brain function being marked in the map. In the method, during a measurement cycle a stimulation of a brain function is effected and a stimulation image of the brain operating field with the stimulated brain function is recorded, a reference image without the stimulated brain function is recorded, the stimulation image and the reference image are used to generate the map, and the map is displayed on a display. A plurality of cycles are performed. A new map is generated after each cycle following the first cycle. In order to generate the new map, the stimulation and reference images of one or more preceding cycles are used besides the images recorded in the cycle just carried out. At least the new map is displayed after each cycle.

Abstract: The invention is directed to a method for operating a visualization system which includes a surgical microscope assembly for viewing a surgical region under magnification. The surgical microscope assembly is provided with a computer unit having a display for displaying image data. A detection arrangement is configured to detect endoscopic images in the surgical region and is operatively coupled to the surgical microscope assembly. A circuit actuable by a viewing person is configured to detect actuation data. The circuit is configured to set an operating state of the surgical microscope assembly matched to the detection arrangement in response to a presence of the actuation data for the surgical microscope assembly.

Abstract: An eye surgery system 1 comprises microscopy optics 3 and an OCT device 5 to generate a light-optical image and an OCT image of an eye fundus 11, a controller 29 and a visualization system 13, 41, 83. The controller comprises a data interface 97 for receiving a preoperative OCT image and may control the visualization system to display a representation of the received preoperative OCT image. The controller may control the OCT device 5 to record an intraoperative OCT image and may control the visualization system to display a representation of the recorded intraoperative OCT image. The controller may adjust a magnification of the representation of the intraoperative OCT image and/or a magnification of the representation of the preoperative OCT image so that the magnifications of the representation of the intraoperative OCT image and the magnification of the representation of the preoperative OCT image are equal.

Abstract: A visualization system includes a surgical microscope assembly for viewing a surgical region under magnification. The surgical microscope assembly is provided with a computer unit having a display for displaying image data. A detection arrangement is configured to detect endoscopic images in the surgical region and is operatively coupled to the surgical microscope assembly. A circuit actuable by a viewing person is configured to detect actuation data. The circuit is configured to set an operating state of the surgical microscope assembly matched to the detection arrangement in response to a presence of the actuation data for the surgical microscope assembly.

Abstract: The invention is directed to a method for operating a visualization system which includes a surgical microscope assembly for viewing a surgical region under magnification. The surgical microscope assembly is provided with a computer unit having a display for displaying image data. A detection arrangement is configured to detect endoscopic images in the surgical region and is operatively coupled to the surgical microscope assembly. A circuit actuable by a viewing person is configured to detect actuation data. The circuit is configured to set an operating state of the surgical microscope assembly matched to the detection arrangement in response to a presence of the actuation data for the surgical microscope assembly.

Abstract: A method for improving an OCT image of an object such as the retina of an eye, using optical coherence tomography by an imaging beam path. In order to suppress shadowing effects due to a surgical instrument moved in the imaging beam path, a time series of OCT images is produced. For an OCT image to be corrected, an area of the object lying in the image and shadowed by the instrument is determined. Another earlier OCT image in which the area of the object is not shadowed is searched in the time series. Image information for the area of the object is read from the earlier OCT image. A corrected OCT image is produced by inserting the read-image information into the OCT image to be corrected, wherein in the OCT image to be corrected, the image information replaces the area of the object which is shadowed by the instrument.

Abstract: An eye surgery system includes an operating microscope having at least one camera, a data memory, a pattern generator, and a display apparatus. The operating microscope presents a microscope image of an eye, and the at least one camera records a camera image of the eye. The data memory stores data that represent at least one predetermined position, relative to the eye, of a trocar to be inserted into the eye. The pattern generator generates a pattern representing the predetermined position of the trocar on the basis of the data stored in the data memory and the camera image recorded by the camera, and the display apparatus overlays the pattern produced by the pattern generator on the microscope image of the eye.

Abstract: An eye surgery system 1 comprises microscopy optics 3 and an OCT device 5 to generate a light-optical image and an OCT image of an eye fundus 11, a controller 29 and a visualization system 13, 41, 83. The controller comprises a data interface 97 for receiving a preoperative OCT image and may control the visualization system to display a representation of the received preoperative OCT image. The controller may control the OCT device 5 to record an intraoperative OCT image and may control the visualization system to display a representation of the recorded intraoperative OCT image. The controller may adjust a magnification of the representation of the intraoperative OCT image and/or a magnification of the representation of the preoperative OCT image so that the magnifications of the representation of the intraoperative OCT image and the magnification of the representation of the preoperative OCT image are equal.

Abstract: An ophthalmologic system comprising and eye tracker and an OCT system. A method of operating the ophthalmologic system comprises: providing data representing a placement of a first B-scan performed on an eye relative to the eye; performing a measurement on the eye using the eye tracker; determining a placement of the eye relative to the ophthalmologic system based on the measurement using the eye tracker; placing the eye relative to a reference placement of the OCT system based on the provided data and the determined placement; performing A-scans on the eye at at least three A-scan positions; determining a placement of a second B-scan relative to the OCT system based on at least one of the at least three A-scans and the provided data such that the second B-scan and the first B-scan have a substantially same placement relative to the eye; and generating a representation of the second B-scan.

Abstract: A visualization system includes a surgical microscope assembly for viewing a surgical region under magnification. The surgical microscope assembly is provided with a computer unit having a display for displaying image data. A detection arrangement is configured to detect endoscopic images in the surgical region and is operatively coupled to the surgical microscope assembly. A circuit actuable by a viewing person is configured to detect actuation data. The circuit is configured to set an operating state of the surgical microscope assembly matched to the detection arrangement in response to a presence of the actuation data for the surgical microscope assembly.

Abstract: The invention relates to an image processing device (1) for finding corresponding first and second regions in two image data sets of an object. In a first image data set a source line and in a second image data set a corresponding target line are determined depending on reference regions detectable in both image data sets. A first region in the first image data set is projected onto the source line, thereby dividing the source line into two source sub-lines and defining a source ratio as the ratio of the length of one of the source sub-lines to the length of the entire source line. A second region in the second image data set is then determined such that a projection of the second region onto the target line leads to a corresponding target ratio which is similar to the source ratio.

Abstract: An ophthalmologic system comprising and eye tracker and an OCT system. A method of operating the ophthalmologic system comprises: providing data representing a placement of a first B-scan performed on an eye relative to the eye; performing a measurement on the eye using the eye tracker; determining a placement of the eye relative to the ophthalmologic system based on the measurement using the eye tracker; placing the eye relative to a reference placement of the OCT system based on the provided data and the determined placement; performing A-scans on the eye at at least three A-scan positions; determining a placement of a second B-scan relative to the OCT system based on at least one of the at least three A-scans and the provided data such that the second B-scan and the first B-scan have a substantially same placement relative to the eye; and generating a representation of the second B-scan.

Abstract: A method for improving an OCT image of an object such as the retina of an eye, using optical coherence tomography by an imaging beam path. In order to suppress shadowing effects due to a surgical instrument moved in the imaging beam path, a time series of OCT images is produced. For an OCT image to be corrected, an area of the object lying in the image and shadowed by the instrument is determined. Another earlier OCT image in which the area of the object is not shadowed is searched in the time series. Image information for the area of the object is read from the earlier OCT image. A corrected OCT image is produced by inserting the read-image information into the OCT image to be corrected, wherein in the OCT image to be corrected, the image information replaces the area of the object which is shadowed by the instrument.

Abstract: An eye surgery system 1 comprises microscopy optics 3 and an OCT device 5 to generate a light-optical image and an OCT image of an eye fundus 11, a controller 29 and a visualization system 13, 41, 83. The controller comprises a data interface 97 for receiving a preoperative OCT image and may control the visualization system to display a representation of the received preoperative OCT image. The controller may control the OCT device 5 to record an intraoperative OCT image and may control the visualization system to display a representation of the recorded intraoperative OCT image. The controller may adjust a magnification of the representation of the intraoperative OCT image and/or a magnification of the representation of the preoperative OCT image so that the magnifications of the representation of the intraoperative OCT image and the magnification of the representation of the preoperative OCT image are equal.

Abstract: The invention relates to an image processing device (1) for finding corresponding first and second regions in two image data sets of an object. In a first image data set a source line and in a second image data set a corresponding target line are determined depending on reference regions detectable in both image data sets. A first region in the first image data set is projected onto the source line, thereby dividing the source line into two source sub-lines and defining a source ratio as the ratio of the length of one of the source sub-lines to the length of the entire source line. A second region in the second image data set is then determined such that a projection of the second region onto the target line leads to a corresponding target ratio which is similar to the source ratio.