Abstract: A medical device comprises a device adapted to perform a medical procedure; a biometric information sensing device adapted to sense biometric information of a user; a controller adapted to retrieve stored biometric registration information of a user from a storage device in communication with the controller, to determine an identity of the user by comparing the stored biometric registration information and the sensed biometric information, and to prevent performance of the medical procedure if the sensed biometric information does not correspond to the stored biometric registration information.

Abstract: The invention relates to methods of treating an eye that include coupling a suction ring to the eye and introducing a liquid into an interior chamber of a container element coupled to the suction ring. The container element is also coupled to a focusing lens of a laser system such that only the liquid within the interior chamber is positioned between the focusing lens of the laser system and an outer surface of the eye. In some embodiments, the suction ring has a first suction region that is designed to suck the suction ring onto an eye and a second suction region that is designed to couple the suction ring to the container element.

Abstract: The invention relates to a system for ophthalmology or dermatology, having a laser unit for generating pulsed laser radiation, the pulse length of the laser pulses lying in the femtosecond range, a hand unit for emitting laser radiation generated by the laser unit, and a flexible light waveguide for delivering the laser radiation generated by the laser unit to the hand unit. The invention furthermore relates to a corresponding hand unit for emitting pulsed laser radiation generated by a laser unit, the laser radiation having pulse lengths in the femtosecond range.

Abstract: Described is an eye treatment device having a radiation source, the light emitted by the radiation source having such a wavelength range that it brings about a reaction in a treatment region of an eye and is absorbed, at least partially, in at least one of the regions located behind same in the direction of the retina that are in front of the retina. The light emitted by the radiation source can have a wavelength range in which the treatment region is partially transmissive. The treatment region can be the cornea. The reaction brought about in the treatment region by the light can be an ablation of tissue. The reaction brought about in the treatment region by the light can also be a laser-induced optical perforation of tissue, which is also referred to as photo-disruption. The radiation source can be a laser source.

Abstract: An apparatus and a method for refractive surgery, in particular LASIK, make provision whereby the apex of the cornea is taken as a basis, as the ablation center, for the refractive procedure. For this purpose, the dependence of the position of the apex on properties of the pupil is determined in the case of the eye to be treated and, from this dependence, measured properties of the pupil are used to calculate the position of the ablation center during the refractive surgery.

Abstract: A laser system for refractive surgery comprises a laser beam for generating laser beam pulses and optical means for directing these laser beam pulses as a working beam onto an eye. Some of the working radiation is extracted for optical coherence tomography, in order to measure geometrical structures in the cornea.

Abstract: The invention relates to a system for ophthalmic laser surgery, comprising a source (110) of pulsed laser radiation with radiation parameters matched to the making of an incision in an ocular tissue, particularly in the cornea, a scanner (160) for deflecting the laser radiation, an electronic control unit (190) which has been set up to control the scanner in accordance with a predetermined incision geometry, and a modulator unit (170) for modulating the laser pulses emitted from the source (110). The control unit (190) has furthermore been set up to control the modulator unit (170) in accordance with a beam-deflection pattern established for the incision geometry in such a manner that in predetermined parts of the beam-deflection pattern at least some of the laser pulses have a reduced pulse energy or are suppressed.

Abstract: The invention relates to a suction ring (2) for ophthalmic surgery, with a first suction region (4), which is designed to suck the suction ring onto an eye (18), and with a second suction region (10), which is designed to aspirate a functional element (12). The functional element and/or the suction ring may exhibit measuring means. The functional element may be formed in the manner of a container, so that it can receive a liquid which in operation is located between the cornea of the eye and a lens.

Abstract: An arrangement for carrying out surgical laser treatments of the eye is adapted to emit pulsed treatment radiation with a wavelength of between about 190 nm and about 380 nm and a pulse duration in the femtosecond range. Such treatment radiation allows nonaggressive corneal or intraocular laser treatment of the eye, for example in order to make corneal cuts or deliberately ablate corneal tissue.

Abstract: The present invention relates to an apparatus 10 for ophthalmological laser surgery, with an optical imaging system for imaging a treatment laser beam 14 onto a focal point, with a temperature-measuring device for measuring a temperature assigned to the imaging system, and with an electronic control arrangement (22) connected to the temperature-measuring device, which is configured to control the focal-point setting in a manner depending on the measured temperature. The present invention further relates also to an associated method.

Abstract: An ophthalmic laser apparatus includes components for providing a first pulsed laser beam (140) having beam properties matched to the ablation of corneal material and for providing a second pulsed laser beam (290) having beam properties matched to the making of an incision in the ocular tissue. The components include separate laser-sources (110, 130) for generating the two laser beams and also a plurality of optical elements which guide the two laser beams on separate beam paths to a respective beam exit location and focus them to a focal point situated outside the beam exit location. In accordance with the invention, the optical elements include an optical waveguide (250) serving for guidance of the second laser beam, at least the two laser-sources being accommodated in a common housing (340) and the optical waveguide extending within the housing at least over a part of its length.

Abstract: Systems and methods for treating presbyopia are provided. In one embodiment, a system for photorefractive treatment of presbyopia includes a laser source configured for ablating corneal tissue and a control system in communication with the laser source and configured to control the laser source to ablate conical tissue of a patient to achieve a desired corneal shape. In some instances, the control system controls the laser source by calculating a global optimum regarding curvature and asphericity of the cornea. In some instances, control system controls the laser source by calculating a central steep island and calculating a curvature and asphericity for the rest of the cornea. In some embodiments, a laser source is controlled to ablate the cornea of the patient in accordance with a calculated shape profile to achieve a desired corneal shape.

Abstract: A device for machining the human cornea with focused pulsed femtosecond laser radiation comprises scanner components for local setting of the beam focus, a control computer for controlling the scanner components, and a control program for the control computer. The control program contains instructions that upon execution by the control computer are designed to bring about the generation of an incision figure in the cornea encompassing a flap incision (38, 40). In accordance with the invention the incision figure further encompasses an auxiliary incision (50) connected with the flap incision and leading locally, preferentially directly, away from the latter as far as the surface of the cornea. The auxiliary incision is expediently generated temporally ahead of the flap incision and forms a discharge channel through which gases can escape that may arise in the course of the cutting of the flap incision.

Abstract: A device and a computer program for material processing, in particular refractive eye surgery, operate with a pulsed femtosecond laser and the individual focal points are positioned in such a way that the spacings of neighboring focal points for the most part vary, in order to avoid a regular grating structure avoiding undesired diffraction phenomena.

Abstract: An optical imaging system comprises at least one deformable mirror (34) and an adjustment and control arrangement (36, 38) which is coupled to the mirror and is adapted to displace the image-side focal point (52) of the imaging system in the beam propagation direction by deformation of the mirror, particularly in accordance with a predetermined focal point displacement profile. The optical imaging system is preferably employed in a device for femtosecond laser surgery of the human eye, for example for corneal lenticle extraction.

Abstract: An arrangement for carrying out surgical laser treatments of the eye is adapted to emit pulsed treatment radiation with a wavelength of between about 190 nm and about 380 nm and a pulse duration in the femtosecond range. Such treatment radiation allows nonaggressive corneal or intraocular laser treatment of the eye, for example in order to make corneal cuts or deliberately ablate corneal tissue.

Abstract: An apparatus for cutting a flap in the cornea of an eye (10) exhibits the following: a laser radiation source for generating laser radiation, means for shaping and guiding the laser radiation in relation to the cornea (20) in such a manner that in the cornea an incision (28) arises which enables a folding of the flap (26) upwards from the cornea. In the process the incision (28) is guided in the hinge region (22) of the cornea in such a way that an undercut arises under the hinge region (22). By this means it is ensured that, in particular in the case of an fs LASIK, the intervention into the stroma is effected substantially symmetrically in relation to a central axis of the cornea (20), so that no undesirable deformations of the cornea result post-operatively by reason of the intraocular pressure.

Abstract: An apparatus for movable weight-compensating suspension of a focusing objective of a laser system comprises a force generation device to generate a counterforce component G which counteracts the weight of the focusing objective, a transmission device which transmits the counterforce component G onto the focusing objective and permits upward/downward compensatory movement of the focusing objective, in such a way that in the case of an upward/downward compensatory movement of the focusing objective, an optical axis (O) of the focusing objective maintains at least its orientation in space, and preferably its position in space.

Abstract: A method for determining control information for controlling laser radiation irradiated onto the cornea of an eye to be treated photorefractively comprises correcting a corneal ablation profile, obtained by measuring optical properties of the eye, with the aid of correction information, the control information being formed on the basis of the corrected ablation profile thus produced. According to the invention, the correction of the ablation profile is performed in the spatial frequency domain. To this end, the ablation profile is transformed into a spatial frequency spectrum. Corrected amplitude or/and phase values are then determined for various discrete spectral components of the ablation profile on the basis of stored amplitude or/and phase correction information. Subsequently, the spatial frequency spectrum with the amplitude or/and phase corrected spectral components is backtransformed into the geometric spatial domain. The result is the corrected ablation profile.

Abstract: Disclosed is an apparatus for ophthalmological, in particular, refractive laser surgery, which aligns a required ablation profile on a specified corneal point, which it calculates from the image data of an eye tracker, taking account of the depth of the anterior chamber of the eye, including the depth of the cornea, calculated individually for the respective patient.