Abstract: An apparatus for creating incisions in a human cornea comprises: a source of pulsed laser radiation; a scanner device for scanning the laser radiation; and a control computer for controlling the scanner device based on a control program, the control program containing instructions that, when executed by the computer, bring about the creation in the cornea of: a flap cut defining a corneal flap that is connected to surrounding corneal tissue through a hinge; and one or more auxiliary cuts in connection with the flap cut for removing gas generated during creation of the flap cut, the one or more auxiliary cuts defining a first channel extending from the flap cut to an anterior surface of the cornea and a reservoir located at least partially deeper within the cornea than the flap cut.

Abstract: A device (100) for ophthalmic radiation is provided. The device comprises a radiation interface (102), an optical branch coupler (104), and a plurality of ophthalmic units (106, 108, 110, 112). The radiation interface is adapted to at least one of output and capture radiation on an optical path (124). The optical path is directable towards a patient's eye. The optical branch coupler is adapted to couple output radiation from a plurality of optical branches (118, 119, 120, 122, 123) into the optical path and to couple captured radiation from the optical path into the optical branches. The captured radiation is spectrally split by the optical branch coupler into the optical branches. Each of the optical branches has a different spectral range. Each of the plurality of ophthalmic units is arranged to couple to one of the optical branches.

Abstract: A device for generating at least one continuous slit-like incision (42) from the posterior surface (48) as far as the anterior surface (46) of the cornea (44) of an eye, comprising a laser device for generating at least one part of the incision with focused pulsed laser radiation, the laser device including controllable components for setting the location of the focus, a control computer for controlling these components, and also a control program for the control computer. The control program contains instructions that are designed to bring about, upon execution by the control computer, the generation of at least one part of the incision (42) originating from the posterior surface (48) of the cornea, the cross-sectional contour of the incision—when observed in the direction from the anterior surface to the posterior surface—deviating from a straight line (60) perpendicular to the surface of the eye.

Abstract: A test device to calibrate the pulse energy of a laser device which provides pulsed laser radiation includes a measuring head with multiple measuring probes. The test device is used in such a way that by means of the laser radiation, multiple test ablations are made on a test surface, in an arrangement corresponding to the relative spatial arrangement of the measuring probes, and the depths of the test ablations are then measured, with simultaneous use of the multiple measuring probes of the measuring head.

Abstract: In certain embodiments, a system (10) comprises a laser source (20), one or more optical elements (24), a monitoring device (28), and a control computer (30). The laser source (20) emits one or more laser pulses. The optical elements (24) change a pulse length of the laser pulses, and the monitoring device (28) measures the pulse length of the laser pulses to detect the change in the pulse length. The control computer (30) receives the measured pulse length from the monitoring device (28), determines one or more laser parameters that compensate for the change in the pulse length, and controls the laser source (20) according to the laser parameters.

Abstract: In an embodiment, a scanning optical system comprises first and second optical sources and a deflector device. The first and second optical sources provide first and second beams, respectively, of optical radiation. The deflector device is disposed to receive and deflect the first and second beams, and is configured for a scanning operation on a beam of radiation traversing the deflector device. The first beam is incident on the deflector device with a first orientation and the second beam is incident on the deflector device with a second orientation that is different from the first orientation.

Abstract: In certain embodiments, determining biometric properties of an eye includes emitting a measuring light beam. The measuring light beam is guided towards the eye for a plurality of scans. For each scan, the measuring light beam enters the cornea in a first lateral region and reaches the retina of the eye in a second lateral region along a corresponding beam path. The beam paths are different from each other. The measuring light beam back-reflected from the eye for each scan is interferometrically analyzed to provide corresponding OCT data. At least one of the following is determined according to the OCT data: at least one distance from a surface of the retina to a surface of the cornea or to a surface of the lens of the eye.

Abstract: According to certain embodiments, a method for laser cutting treatment of a human eye comprises: determining position information of a pupil center of the eye in relation to a point of minimal corneal thickness in an undeformed state of the eye; locating the point of minimal corneal thickness in a flattened state of the eye, in which the eye is deformed by contact with a patient adapter of a laser device; and aligning a pulse firing pattern for laser radiation pulses of the laser device, based on a position of the located point of minimal corneal thickness and the determined position information. In embodiments, the pulse firing pattern represents, for example, a lenticular or doughnut-shaped intracorneal tissue volume which is to be removed from the cornea of the eye.

Abstract: In certain embodiments, determining biometric properties of an eye includes emitting a measuring light beam. The measuring light beam is guided towards the eye for a plurality of scans. For each scan, the measuring light beam enters the cornea in a first lateral region and reaches the retina of the eye in a second lateral region along a corresponding beam path. The beam paths are different from each other. The measuring light beam back-reflected from the eye for each scan is interferometrically analyzed to provide corresponding OCT data. At least one of the following is determined according to the OCT data: at least one distance from a surface of the retina to a surface of the cornea or to a surface of the lens of the eye.

Abstract: A crosslinking control system, the use of the crosslinking control system, a laser system comprising the crosslinking control system, a crosslinking control method and a method for laser treatment are provided. The crosslinking control system comprises a photosensitizer providing unit, a light source configured to provide light having a wavelength suitable to activate the photosensitizer introduced into or applied onto the tissue for crosslinking, and a control computer.

Abstract: In an embodiment, a scanning optical system comprises first and second optical sources for providing and a deflector device. The first and second optical sources provide first and second beams, respectively, of optical radiation. The deflector device is disposed to receive and deflect the first and second beams, and is configured for a scanning operation on a beam of radiation traversing the deflector the device. The first beam is incident on the deflector device with a first orientation and the second beam is incident on the deflector device with a second orientation that is different from the first orientation.

Abstract: A diagnosis system and a diagnosis method are provided. More specifically, embodiments of the present disclosure relate to a diagnosis system for detection of corneal degeneration impacting the biomechanical stability of the human cornea and a diagnosis method for detection of corneal degeneration impacting the biomechanical stability of the human cornea. Still more specifically, embodiments of the present disclosure relate to a diagnosis system for early detection of corneal degeneration impacting the biomechanical stability of the human cornea and a diagnosis method for early detection of corneal degeneration impacting the biomechanical stability of the human cornea.

Abstract: The invention relates to an eye-surgical laser apparatus, a use of said apparatus, and to a method for scanning the corneal tissue of an eye before or during eye surgery. The apparatus comprises optics that are adapted to focus a laser beam at a focus within a corneal tissue of an eye, and a detection element adapted to detect light that is formed, at the focus, as a frequency multiple and backscattered or forward emitted. Image information about the inner corneal tissue is then produced from the detected light.

Abstract: Embodiments of the invention provide a method and apparatus for laser-processing a material. In the embodiments, a diffraction-limited beam of pulsed laser radiation is diffracted by a diffraction device to generate a diffracted beam. The diffracted beam is subsequently focused onto the material and is controlled in time and space to irradiate the material at a target position with radiation from a set of radiation pulses of the diffracted beam so that each radiation pulse from the set of radiation pulses is incident at the target position with a cross-sectional portion of the diffracted beam, the cross-sectional portion including a local intensity maximum of the diffracted beam. The beam cross-sectional portions of at least a subset of the pulses of the set include each a different local intensity maximum. In this way, a multi-pulse application for generating a photo-disruption at a target location of the material can be implemented.

Abstract: A method for energy setting of pulsed, focused laser radiation is provided. In the method, a relationship between a threshold pulse energy required for causing irreversible damage in a material and a pulse duration is established. The relationship allows for obtaining a threshold pulse energy for each of a plurality of pulse durations, including one or more pulse durations in a range between 200 fs and smaller. The relationship defines a decreasing threshold pulse energy for a decreasing pulse duration in the range between 200 fs and smaller. For a given pulse duration in the range between 200 fs and smaller, an associated threshold pulse energy is determined based on the established relationship. The pulse energy of the laser radiation is set based on the determined associated threshold pulse energy.

Abstract: According to an exemplary embodiment, a device (12) for assisting in the preparation of an operation on the human eye (14) for the purpose of generating a corneal flap by means of a microkeratome system (10) includes: an input interface arrangement (50) that permits at least the input of data relating to a set value of at least one flap parameter and also to at least one patient-related parameter; a computer (46) that has been set up to access a stored data collection (44) of several surgical data records, each of which includes a post-operative actual value of at least one flap parameter, a value for at least one patient-related parameter and configuration data of the microkeratome system, the computer (46) having been set up to ascertain, on the basis of the data collection (44) in a manner depending on the input data, configuration information that represents a proposed configuration of the microkeratome system (10); an output interface arrangement (48) for outputting the configuration information.

Abstract: A system for surgical treatment of an eye includes a laser arrangement that is adapted to emit light with a wavelength and repetition-rate suitable for surgical treatment of the eye. The system further includes a temperature-registration device that is adapted to register the temperature of an object that is to be subjected to the light of the laser arrangement.

Abstract: A method for preparing an endothelial corneal graft is provided. The method comprises: providing a donor cornea; irradiating the donor cornea from an endothelial side thereof with laser radiation to cause a photodisruption in tissue of the donor cornea at a focal point of the radiation; and moving the focal point of the radiation to form an endothelial graft in the donor cornea. By irradiating the donor cornea from the endothelial side thereof, instead of the epithelial side, to cut the endothelial graft, optical inhomogeneities which may develop after death in stromal tissue of the donor cornea leave the laser cutting process substantially unaffected.

Abstract: An apparatus for creating incisions in a human cornea comprises: a source of pulsed laser radiation; a scanner device for scanning the laser radiation; and a control computer for controlling the scanner device based on a control program, the control program containing instructions that, when executed by the computer, bring about the creation in the cornea of: a flap cut defining a corneal flap that is connected to surrounding corneal tissue through a hinge; and one or more auxiliary cuts in connection with the flap cut for removing gas generated during creation of the flap cut, the one or more auxiliary cuts defining a first channel extending from the flap cut to an anterior surface of the cornea and a reservoir located at least partially deeper within the cornea than the flap cut.

Abstract: An embodiment of a scanning optical system comprises: an optical source providing a beam of pulsed light of ultra-short pulse duration; a deflector for deflecting the beam through a scan angle; a lens system including a focusing objective for focusing the deflected beam; a dispersion compensating device for reducing dispersion-related distortion of a pulse of the beam by the lens system, the dispersion compensating device including a deformable, dispersive mirror and an actuator device for the mirror; and a controller for controlling the actuator device to change a shape of the mirror in accordance with the scan angle.