Abstract: The present invention relates to a system for acquiring and visualizing OCT signals, comprising an OCT system and a display means designed for the time-resolved display of image data. The system further comprises a control unit configured to drive the OCT system to acquire a time-resolved OCT signal of a selected field of view of the sample and to determine a time-resolved OCT image on the basis of the acquired time-resolved OCT signal and a specifiable virtual viewing direction and to display the time-resolved OCT image on the display means. The present invention also relates to a corresponding method for acquiring and visualizing OCT signals.

Abstract: A system and method for multimodal image acquisition and image visualization, including a surgical-microscopic system with an optical unit and an image sensor and designed for acquiring a time-resolved image signal of a selected field of view of a sample. The system includes an OCT system, which is designed to acquire a time-resolved OCT signal of the selected field of view, a display means designed for the time-resolved display of image data and a control unit. The control unit is configured to ascertain video image data corresponding to the acquired image signal and to present them on the display means, to ascertain a time-resolved OCT image, corresponding at least to a portion of the presented video image data, on the basis of the acquired OCT signal, and to present the OCT image on the display means at the position of the portion.

Abstract: A method and associated system for operating a robotic visualization system comprising an imaging optical unit and a robotic arm for positioning the imaging optical unit within a surround. The method includes ascertaining a target field of view to be visualized by means of the imaging optical unit. Ascertaining a target pose of the robotic visualization system for capturing an image of the target field of view with a first imaging configuration of the imaging optical unit. Ascertaining a collision probability along a movement path of the robotic visualization system from a current pose to the ascertained target pose using a 3-D model of the surround. Ascertaining an adapted target pose for capturing an image corresponding to the target field of view with a second imaging configuration of the imaging optical unit using the 3-D model of the surround, should the ascertained collision probability exceed a predetermined threshold value.

Abstract: A stand for a surgical microscope includes a digiscope and an imaging unit which are interconnected and mounted on an arm of the stand at a joint rotatably about an axis of rotation. The digiscope and the imaging unit are arranged on a bridge such that a fixed spatial relationship, in particular a distance larger than zero between the digiscope and the imaging unit during a relative movement between the digiscope and the patient is maintained. A method for configuring a stand with a bridge includes determining distances between eyes of a surgeon and the imaging unit, between the surgeon and an operating field, between the receptacle of the digiscope and the operating field, and between the imaging unit and the receptacle of the digiscope, and determining a length of the bridge to optimally set a distance from the surgeon to the patient and the imaging unit for the surgeon.

Abstract: A mount for an optical apparatus having an image recording unit and an image rendering unit includes a first securing device for the recording unit, a second securing device for the rendering unit, and a connecting rail interconnecting the securing devices. The connecting rail is arranged so as to be displaceable in the y-direction in relation to the second securing device via a linear actuator. The first securing device includes a rotation device arranged so as to be rotatable about an axis of rotation extending in the x-direction. The mount includes a controller which is configured to displace the connecting rail in the y-direction in relation to the second securing device via the actuator when the first securing device is rotated about the tilt axis such that the distance between the focal point and the second securing device is kept constant within a certain interval.

Abstract: An ophthalmic surgical microscope includes a main objective lens, through which an observation beam path passes, and a confocal optical system configured as a refractometer to determine the refraction of an eye. The optical system includes a measurement light source to generate a measurement light beam, a light detector to measure an intensity of measurement light and an optical unit to direct the measurement light beam onto the retina of the eye and to return measurement light reflected back at the retina to the light detector. The optical system includes an adaptive optical module (AOM) to modify a wavefront of the measurement beam path such that an intensity of the back-reflected measurement light changes. A spherical equivalent (SE) of the ametropia of the eye is determined based on a setting of the AOM, at which the measured intensity of the back-reflected measurement light has a maximum.

Abstract: A mount for an optical apparatus having an image recording unit and an image rendering unit includes a first securing device for the recording unit, a second securing device for the rendering unit, and a connecting rail interconnecting the securing devices. The connecting rail is arranged so as to be displaceable in the y-direction in relation to the second securing device via a linear actuator. The first securing device includes a rotation device arranged so as to be rotatable about an axis of rotation extending in the x-direction. The mount includes a controller which is configured to displace the connecting rail in the y-direction in relation to the second securing device via the actuator when the first securing device is rotated about the tilt axis such that the distance between the focal point and the second securing device is kept constant within a certain interval.

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 operating microscope (2, 48) for observing an eye (77) is provided. The operating microscope (2, 48) comprises a main objective (5) and a fundus imaging system (71) that is positionable in the beam path (7) between the eye (77) and the main objective (5), said fundus imaging system having an ophthalmoscopy magnifier (73). The main objective (5) of the operating microscope (2, 48) has a focal length in the range between 90 mm and 160 mm. The fundus imaging system (71) also can comprise an optics group (81), the dispersion properties of which are matched to the dispersion properties of the ophthalmoscopy magnifier (73) in such a way that the optics group (81) compensates a chromatic aberration of the ophthalmoscopy magnifier (73).

Abstract: A stand for a surgical microscope includes a digiscope and an imaging unit which are interconnected and mounted on an arm of the stand at a joint rotatably about an axis of rotation. The digiscope and the imaging unit are arranged on a bridge such that a fixed spatial relationship, in particular a distance larger than zero between the digiscope and the imaging unit during a relative movement between the digiscope and the patient is maintained. A method for configuring a stand with a bridge includes determining distances between eyes of a surgeon and the imaging unit, between the surgeon and an operating field, between the receptacle of the digiscope and the operating field, and between the imaging unit and the receptacle of the digiscope, and determining a length of the bridge to optimally set a distance from the surgeon to the patient and the imaging unit for the surgeon.

Abstract: An eye surgery visualization system includes an image sensor and contains an imaging system for producing an image of an object region with an optical imaging beam path in an imaging plane on an image sensor. A computer unit has an image processing routine for an image of the object region, the image having been captured by the image sensor. An image display unit visualizes image data of an image processed in the computer unit. An ophthalmoscopy loupe of the system images a portion lying within a patient's eye in an intermediate image plane that is conjugate to the imaging plane on the image sensor. The image processing routine separates the first portions of the image of the object region from second portions of the image of the object region in the imaging plane on the image sensor.

Abstract: An ophthalmic surgical microscope includes a main objective lens, through which an observation beam path passes, and a confocal optical system configured as a refractometer to determine the refraction of an eye. The optical system includes a measurement light source to generate a measurement light beam, a light detector to measure an intensity of measurement light and an optical unit to direct the measurement light beam onto the retina of the eye and to return measurement light reflected back at the retina to the light detector. The optical system includes an adaptive optical module (AOM) to modify a wavefront of the measurement beam path such that an intensity of the back-reflected measurement light changes. A spherical equivalent (SE) of the ametropia of the eye is determined based on a setting of the AOM, at which the measured intensity of the back-reflected measurement light has a maximum.

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: An eye surgery visualization system includes an image sensor and contains an imaging system for producing an image of an object region with an optical imaging beam path in an imaging plane on an image sensor. A computer unit has an image processing routine for an image of the object region, the image having been captured by the image sensor. An image display unit visualizes image data of an image processed in the computer unit. An ophthalmoscopy loupe of the system images a portion lying within a patient's eye in an intermediate image plane that is conjugate to the imaging plane on the image sensor. The image processing routine separates the first portions of the image of the object region from second portions of the image of the object region in the imaging plane on the image sensor.

Abstract: The invention relates to an optical system for examining an eye by means of optical coherence tomography. The OCT system is designed in such a way that at least a first and a second state of the optical system can be selectively set by controlling the variable optical unit. In the first state, the OCT measurement beam has a measurement focus at an object distance from the objective, wherein the object distance has a value between 50 millimeters and 400 millimeters. In the second state, the measurement beam has defocusing at the same object distance, wherein the defocusing corresponds to a distance of a virtual or real focus from a position of the object distance that is greater than 100 millimeters.

Abstract: An operating microscope (2, 48) for observing an eye (77) is provided. The operating microscope (2, 48) comprises a main objective (5) and a fundus imaging system (71) that is positionable in the beam path (7) between the eye (77) and the main objective (5), said fundus imaging system having an ophthalmoscopy magnifier (73). The main objective (5) of the operating microscope (2, 48) has a focal length in the range between 90 mm and 160 mm. The fundus imaging system (71) also can comprise an optics group (81), the dispersion properties of which are matched to the dispersion properties of the ophthalmoscopy magnifier (73) in such a way that the optics group (81) compensates a chromatic aberration of the ophthalmoscopy magnifier (73).

Abstract: A visualization apparatus for a surgical site includes a recording unit for recording an image of an object arranged in a focal plane of the recording unit. The recording unit has a lens having an optical axis that intersects the focal plane at a point P. An electronic image representation unit has an image surface for reproducing the recorded image and point P is reproduced at image point P?. A mirror unit has a mirror surface, which has a center point S and is arranged relative to the image surface such that the reproduced image is reflected by the mirror surface. The focal plane, image surface and mirror surface are arranged relative to one another such that an observation point B results for which the following applies: ?2 D<?1??2<+2 D; wherein: ?1=?1/d1 ?2=?1/d2 d1=distance PB d2=distance P?S+distance SB.

Abstract: A surgical microscope for imaging structures of an eye includes: a front optical unit, an illumination device which has an illumination-radiation-emitting illumination source and which illuminates the retina of the eye with an illumination spot via an illumination beam path which extends through the front optical unit, a camera and an adjustable camera optical unit disposed upstream thereof, an imaging beam path which extends through the front optical unit and the camera optical unit, and a control device which controls the camera optical unit and sets the latter in such a way that the retina of the eye in the region of the illumination spot is imaged on the camera. The control device varies a focusing state of the camera optical unit and, as a result thereof, records a plurality of images of the retina in the region of the illumination spot, the images being focused in different depth planes, and establishes a refractive value of the eye from these images.

Abstract: The invention relates to an optical system for examining an eye by means of optical coherence tomography. The OCT system is designed in such a way that at least a first and a second state of the optical system can be selectively set by controlling the variable optical unit. In the first state, the OCT measurement beam has a measurement focus at an object distance from the objective, wherein the object distance has a value between 50 millimeters and 400 millimeters. In the second state, the measurement beam has defocussing at the same object distance, wherein the defocussing corresponds to a distance of a virtual or real focus from a position of the object distance that is greater than 100 millimeters.