Carl Zeiss Meditec Ag

Michael Bergt

Mark Bischoff

Gregor Stobrawa

Markus Sticker

Martin Wiechmann

Manfred Dick

Mario Gerlach

Carsten Lang

Hartmut Vogelsang

Robert Pomraenke

Eckhard Schroeder

Delbert Peter Andrews

Dirk Mühlhoff

Holger Maeusezahl

Jens Ringling

Dirk Muehlhoff

Martin Kühner

Thomas Nobis

Ekkehard Fabian

Sascha Koch

Michael Kempe

Ralf Ebersbach

Dietmar Steinmetz

Michael Stefan Rill

Tobias Damm

Evangelos Papastathopoulos

Thomas Wollweber

Rupert Menapace

Stephan Laqua

Stephan Oestreich

Thomas Hamann

Holger Heinz

Juergen Kuehnert

Dan Z Reinstein

Georg Sluyterman Van Langeweyde

Markus Strehle

Holger Mäusezahl

Peter Andrews

Eckhard Schröder

Dick Manfred

Alexander Nikolaev

Steffen Kahra

Herrn Jürgen Kühnert

Dirk MÜHLHOFF

Mario Dipl-Ing Gerlach

A treatment method and apparatus for surgical correction of defective-eyesight in an eye of a patient, wherein a laser device is controlled by a control device, said laser device separating corneal tissue by irradiation of laser radiation to isolate a volume located within a cornea, wherein the control device controls the laser device to focus the laser radiation, by providing target points located within the cornea, into the cornea, wherein the control device, when providing the target points, allows for focus position errors which lead to a deviation between the predetermined position and the actual position of the target points when focusing the laser radiation, by pre-offsets depending on the positions of the respective target points to compensate for said focus position errors.

Treatment apparatus for surgical correction of defective eyesight, method of generating control data therefore, and method for surgical correction of defective eyesight

A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R* to determine the control data, the cornea reduced by the volume having the radius of curvature R* and the radius of curvature being site-specific and satisfying the following equation: R*(r,φ)=1/((1/R(r,φ))+B(r,φ)/(n−1))+F, wherein R(r,φ) is the local radius of curvature of the cornea before the volume is removed, nis the refractive index of the material of the cornea, F is a coefficient, and B(r,φ) is the local change in refractive force required for the desired correction of defective vision in a plane lying in the vertex of the cornea, and at least two radii r1 and r2 satisfy the equation B(r=r1,φ)≠B(r=r2,φ).

Device and method for producing control data for the surgical correction of defective eye vision

A system for short pulse laser eye surgery and a short pulse laser system, in which a beam guidance device passes through a corresponding articulated arm, and through an applicator head and a microscope head of the system, which is movable in a three-dimensional volume both independently of one another as well as connected to each other. The system also includes an easy to use patient interface with a one-piece contact element, a computer program product for methods of the incision guidance and sequentially operating referencing methods with patient interfaces containing markings.

Systems and methods for short pulse laser eye surgery

A system for processing a portion in a processing volume of a transparent material by application of focused radiation including a device for generating and an optical system for focusing radiation, with a device for changing the position of the focus of the radiation and a control device. The system includes a controller that controls the ophthalmologic therapy system. The controller is encoded with a scan pattern. The scan pattern includes adjacent strokes with each adjacent stroke having an angle of inclination (α) to the beam axis; and the angle of inclination (α) of the strokes to the beam axis is always larger than or equal to the focal angle (φ) of the focused radiation.

Opthalmologic therapy system and method for processing a portion of a processing volume of a transparent material by application of focused radiation

A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R* to determine the control data, the cornea reduced by the volume having the radius of curvature R* and the radius of curvature being site-specific and satisfying the following equation: R*(r,&#x3c6;)=1/((1/R(r,&#x3c6;))+B(r,&#x3c6;)/(n-1))+F, wherein R(r,&#x3c6;) is the local radius of curvature of the cornea before the volume is removed, nis the refractive index of the material of the cornea, F is a coefficient, and B(r,&#x3c6;) is the local change in refractive force required for the desired correction of defective vision in a plane lying in the vertex of the cornea, and at least two radii r1 and r2 satisfy the equation B(r=r1,&#x3c6;)&#x2260;B(r=r2,&#x3c6;).

A system for processing a portion in a processing volume of a transparent material by application of focused radiation including a device for generating and an optical system for focusing radiation, with a device for changing the position of the focus of the radiation and a control device. This system performs a slow scanning movement of the focus and an independent fast scanning movement of the focus which section can be moved by the slow scanning movement in the entire processing volume in an arbitrary direction; as well as by a system into which a scan pattern is encoded, with scanning movement including at least one lateral base component in the x- and/or y-direction, which is superimposed by components with synchronous change-of-direction-movements in the z-direction and in x-direction and/or y-direction. The invention also includes corresponding methods, a control program product and a planning unit.

Opthalmological therapy system and method for processing a portion of a processing volume of a transparent material by application of focused radiation

A method for generating control data to control a laser device for correcting defective vision. A cut surface is specified which is curved, has a vertex and an edge, and is to be created in the eye. One or more paths, along which a focus of the laser radiation is to be adjusted, are defined for the control data and are selected such that they lie on or near the cut surface. To select the paths, a reference plane, preferably perpendicular, with respect to a direction of incidence of the laser radiation is determined, and different displacement positions are determined for said reference plane from the vertex to the edge of the cut surface. Multiple axes or semi-axes are determined for each displacement position. Intersections of the axes are connected into closed curves which are concentric or form a spiral.

Control data generation for the eye surgical treatment of defective vision

The invention relates to a method for forming curved cuts in a transparent material, in particular in the cornea, by the creation of optical perforations in said material using laser radiation that is focused in the material. The focal point is displaced three-dimensionally to form the cut by lining up the optical perforations. The focal point is displaced in a first spatial direction by a displaceable lens and said focal directions, in such a way that it follows the contours of the cut, which lie on a plane that is substantially perpendicular to the first spatial direction.

Method and device for producing curved cuts in a transparent material

A planning device for a scanning pattern of a closed structure in an eye, an ophthalmic laser treatment device and corresponding methods including a scanning pattern of a closed structure in a tissue of a patient's eye in a single-pass method for the control of an ophthalmic laser treatment device, in which a starting point of the macroscopic scanning pattern which contains the scanning pattern is arranged in a region in which the angle between a direction of progress of the macroscopic scanning pattern and a direction of a maximum offset caused by movements of the eye relative to the ophthalmic laser treatment device is minimal, or in a region of a minimum change in the macroscopic scanning pattern (n the z-direction per unit of time, or in a region in which a direction of progress of the macroscopic scanning pattern is parallel to a direction of maximum offset.

Planning device for an ophthalmic laser therapy device

A system for short pulse laser eye surgery and a short pulse laser system, in which a beam guidance device passes through a corresponding articulated arm, and through an applicator head and a microscope head of the system, which is movable in a three-dimensional volume both independently of one another as well as connected to each other. The system also includes, an easy-to-use patient interface with a one-piece contact element, a computer program product for methods of the incision guidance and sequentially operating referencing methods with patient interfaces containing markings.

Systems for short pulse laser eye surgery

A method for creating cuts in a transparent material using optical radiation, the optical radiation being focused onto the material in a focal point and the focal point being shifted along a curve: A simple or double harmonic curve is used when seen at a right angle to a main direction of incidence of the radiation and preferably successively traveled curves do not lie on top of each other.

Creating cuts in a transparent material using optical radiation

The invention relates to a method for forming curved cuts in a transparent material, in particular in the cornea, by the creation of optical perforations in said material using laser radiation that is focused in the material. The focal point is displaced three-dimensionally to form the cut by lining up the optical perforations. The focal point is displaced in a first spatial direction by a displaceable lens and said focal directions in such a way that it follows the contours of the cut, which lie on a plane that is substantially perpendicular to the first spatial direction.

A method for creating cuts in a transparent material using optical radiation, wherein the optical radiation is focused at a focus in the material and the focus is displaced along a trajectory, wherein a periodic, crossing Lissajous figure is used as trajectory as viewed perpendicular to a main direction of incidence at the radiation.

Sectioning a transparent material using optical radiation

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Weimar, Germany

Michael Bergt