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 apparatus for treating an eye with laser radiation exhibits the following: a laser radiation source (12) for generating laser radiation (14), means (20, 24, 40, 42, 44) for directing the laser radiation (14) onto the eye (10) for the purpose of an ophthalmological intervention on or in the eye, a controller (50) for controlling the laser radiation (14) in space and time in relation to the eye (10) in accordance with a treatment program (52) which is oriented towards a centre (Z) of the eye, a camera (46) which records a feature of the eye (10), and an image-processing unit (50a) which derives information about the centre (Z) of the eye (10) from the recording of the camera and enters this information into the controller (50), as a result of which the controller (50) controls the laser radiation (14, 14?) in accordance with the treatment program and in a manner depending on the centre of the eye derived in step e).

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 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: An apparatus for LASIK is equipped with the following: a first laser radiation source for generating first laser radiation pulses having a power density for bringing about disruption in corneal tissue; first means for guiding and shaping the first laser radiation pulses into the corneal tissue; a second laser radiation source for generating second laser radiation pulses having a power density for bringing about ablation of corneal tissue; second means for guiding and shaping the second laser radiation pulses in relation to the cornea; a controller with a first treatment program for controlling the first means and the first laser radiation pulses for the purpose of producing an incision (72) in the cornea (60); and with a second treatment program for controlling the second means and the second laser radiation pulses for the purpose of reshaping the cornea and changing its imaging properties, wherein the first treatment program generates regular corneal surface structures (68) which cause a rainbow-glare eff

Abstract: A cutting blade holder (10) for a microsurgical cutting arrangement, in particular a cutting arrangement for refractive eye surgery, comprises a receptacle (34) into which a cutting blade unit (14) together with a cutting blade (12) can be inserted. For the sideways guidance of the cutting blade unit in the receptacle the cutting blade holder comprises guide means, which in one embodiment include a plurality of guide bars (50, 52, 54, 56) arranged on both sides of the plane of the blade of the cutting blade, by means of which a relatively friction-free linear contact with the cutting blade is produced.

Abstract: A device (10) for fitting a cutting head (26) of a microsurgical cutting instrument, in particular a cutting instrument for use in refractive eye treatments, with a cutting blade unit, comprises a blade cartridge (12) which can be detachably coupled to the cutting blade holder (26) and in which a cutting blade unit is received. In addition, the fitting device comprises a slide (20) which is or can be held slidably relative to the cartridge and by means of which the cutting blade unit can be pushed out of the blade cartridge into a blade receiving pocket of the cutting head (26). Preferably, the slide (20) can be coupled to the cutting blade unit not only in a thrust-proof manner, but also in a traction-proof manner, so that after use the cutting blade unit can be withdrawn from the cutting head again by means of the slide (20) and guided back into the cartridge (12).

Abstract: Disclosed is an apparatus for opthalmological, 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.

Abstract: In a method of calibrating the pulse energy of a laser device which provides pulsed working laser radiation, by means of the working laser radiation, multiple test ablations, in particular multiple-pulse test ablations, are carried out on one or more test objects, each with different pulse energy. The ablation depth of each of the test ablations is measured, and then, on the basis of the measured ablation depths and a specified setpoint ablation depth, an associated setpoint pulse energy is determined and set on the laser device. According to the invention, the ablation depths are measured by means of a coherent optical interferometric measuring device. The invention also concerns a laser device, in particular to carry out the above method.

Abstract: A microsurgical cutting arrangement, in particular for refractive eye surgery, includes a cutting blade holder as well as a cutting blade unit (14) that can be inserted into a receptacle of the cutting blade holder. A cutting blade (12) of the cutting blade unit forms a cutting edge (20) on a first (front) blade edge, and is supported via an opposite (rear) second blade edge (24) on linear bearing means (42) of the cutting blade holder. According to the invention the rear blade edge forms at least two bearing points (26,28) spaced from one another for the bearing of the cutting blades on the bearing means, and between each pair of adjacent bearing points is set back with respect to am imaginary straight line joining the relevant bearing points, in the direction of the front blade edge (at 30).

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: A surgical cutting instrument for refractive opthalmological treatments includes an instrument base body unit (12) to be placed on the eye and that can be fixed relative to the latter, wherein guide holding means (30, 44) are associated with the instrument base body unit, the said means being intended and designed for the movably guided holding, relative to the instrument base body unit, of at least two cutting units (14) of different cutting geometries.

Abstract: Device for measuring wave fronts generated by a lens (4) for an eye, with a radiation source (14) for emitting test radiation (12) to be directed at the lens (4) and a sensor device (26) for detecting wave fronts of incident test radiation after interaction with the lens, wherein the sensor device scans the test radiation (20) after interaction with the lens (4) at a scanning frequency which is at least equal in size to the frequency at which changes in wave fronts occur in the test radiation (20) after interaction with the lens (4).

Abstract: An intraocular lens (10) is configured so that it can be incorporated into the capsule of an eye and its refractive power can be modified by the application of electrical voltages.

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 neighbouring focal points for the most part vary, in order to avoid a regular grating structure avoiding undesired diffraction phenomena.

Abstract: The present invention relates to a method for generating a control program for ophthalmologic LASIK surgery, with which a pulsed laser system (12, 14, 16) can be controlled for the photodisruptive cutting of a flap, having the following steps: obtaining empirical data, which relate to the effect in particular of flap shapes and ablation profiles on postoperative refractive results, obtaining measurement data relating to the eye to be treated, calculating an optimal cutting shape for the photodisruptive cutting of the flap by taking into account the said empirical data and the said measurement data, and generating the control program on the basis of the calculated cutting shape.

Abstract: A device for ophthalmologically treating the eye has a treatment laser beam (UV) for ablating parts of the cornea (12) and a fixation light beam (24). A fixation light spot in the vicinity of the fovea (30) and the fovea are imaged by means of a camera (40). This makes it possible to check whether the patient has reliably fixated the fixation light source (22). In addition, the pupil can be recorded and both recordings can be superimposed.

Abstract: A laser system serves for corneal grafting by photodisruptive laser cutting.

Abstract: The invention relates to a device used for the photorefractive keratectomy of the eye, especially LASIK, uses an UV laser beam for ablating parts of the cornea. A centering light beam is arranged coaxially with respect to the fixing light beam and has a wavelength different from that of the fixing light beam. The device is provided with devices for measuring and evaluating the position of the scattered light/Fresnel reflection of the centering light beam on the front face of the cornea. The point in which the centering light beam passes through the front face of the cornea is used as the center of ablation.

Abstract: A device for the medical treatment of the eye with laser radiation uses auxiliary radiation for determining the eye position. With the aid of the auxiliary radiation, pictures are taken by means of a solid state image camera for determining eye movements and for causing the laser treatment radiation to follow accordingly. Infrared radiation sources, which are arranged in a triangle above the eye to be treated, are used for the auxiliary radiation.