A method for providing control data of an eye surgical laser of a treatment apparatus is disclosed for a treatment on a human or animal eye. The method optimizes a target conflict between low stress for a patient and efficacy of a laser. The method includes, as performed by a control device, determining a patient-specific parameter set, which relates to at least one physiological characteristic of the eye, determining at least one physical parameter for the eye surgical laser depending on the patient-specific parameter set, wherein the physical parameter relates to a physical characteristic of a laser beam of the laser, and providing control data for controlling the eye surgical laser, which includes the physical parameter.

The invention relates to a method for providing control data for an eye surgical laser of a treatment apparatus for the removal of a tissue from a human or animal cornea. The method includes ascertaining a temperature distribution, which is expected in the cornea per laser pulse, determining a laser pulse sequence of a preset laser pulse distribution for removing the tissue by means of a temperature model of the cornea, wherein a respective laser pulse position in the cornea is preset by the laser pulse distribution and wherein it is preset by the laser pulse sequence, in which order the preset laser pulse positions are irradiated with the respective laser pulses, wherein a temperature profile of the cornea is calculated by means of cumulated temperature distributions of the laser pulses in the temperature model and a difference profile to a preset limit temperature profile is determined, and wherein the order of the laser pulses is ascertained depending on the difference profile for determining the laser pulse sequence, and providing control data for controlling the eye surgical laser, which uses the laser pulse sequence for removing the tissue.

The present invention relates to apparatus for cutting out a human or animal tissue, such as a cornea, or a lens, said apparatus including a treatment device for producing a pattern consisting of at least two impact points in a focusing plane from a L.A.S.E.R. beam generated by a femtosecond laser (1), the treatment device being positioned downstream from said femtosecond laser, remarkable in that the treatment device comprises an optical focusing system (5) for focusing the L.A.S.E.R. beam in a cutting-out plane, and a control unit (6) able to control the displacement of the optical focusing system along an optical path of the L.A.S.E.R. beam for displacing the focusing plane in at least three respective cutting-out planes so as to form a stack of surfaces for cutting out the tissue.

The present invention relates to a method for recommending a vision correction surgery, and the method according to one aspect of the present invention comprises: obtaining an examination data of a subject; predicting whether the vision correction surgery is suitable for the subject from the examination data; when the vision correction surgery is suitable for the subject, predicting whether the vision correction surgery using a laser is available for the subject from the examination data; when the vision correction surgery using the laser is available for the subject, calculating corneal shape factor prediction values of the subject after a standard vision correction surgery and a custom vision correction surgery from the examination data; and when the vision correction surgery using the laser is available for the subject, suggesting a vision correction surgery corresponding to the subject from the examination data.

A corneal lenticule extraction procedure provides convenient re-treatment options when treatment interruptions occur. The procedure is executed by an ophthalmic laser system according to a programmed treatment plan, which defines an entry cut, an optional ring cut, a bottom lenticule incision having an optical zone, and a flat top bed incision. If an interruption occurs during the entry cut, the treatment plan is re-aligned with the partially formed entry cut and continued, or with a new entry cut placed at a different angular position. If an interruption occurs during the ring cut, the treatment plan is revised to define a larger ring cut concentric with the partially formed ring cut. If an interruption occurs during the bottom or top incision, the depth of the partially formed bottom or top incision is measured, and the treatment plan is revised to form a deeper bottom incision or a shallower top incision, respectively.

Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical polymeric materials or ocular tissues is performed to address various types of vision correction, and the laser induced changes to the refractive index avoid ablation and removal of the optical polymer materials while minimizing scattering losses.

In certain embodiments, an ophthalmic surgical system for creating a marker in a cornea includes controllable components, a camera, and a computer. The controllable components include a laser source, a scanner, and an objective. The laser source generates a laser beam. The scanner transversely and longitudinally directs a focal point of the laser beam. The objective focuses the focal point towards the eye. The camera images movement of the eye. The computer creates the marker by: instructing the scanner to direct the focal point towards a peripheral region of the cornea; and instructing the controllable components to create the marker in the peripheral region. The computer also determines that movement of the marker is in an alert range indicating an unacceptable amount of movement, and provides notifications in response to determining that the movement of the marker is in the alert range.

In certain embodiments, a system for aligning an eye with a patient interface of a laser device includes a camera, a display screen, and a computer. The camera records images of the eye through the patient interface of the laser device. A liquid is disposed between and is in contact with the patient interface and the outer surface of the eye. The images include an outline of the liquid. The display screen displays the images of the eye. The computer aligns the eye with the patient interface by: identifying the outline of the liquid in an image received from the camera; determining a misalignment of the eye according to the outline; and instructing the display screen to display a description of the misalignment.

A method for controlling a surgical laser for the separation of a volume body, with predefined posterior and anterior interfaces, from a human or animal cornea is disclosed. The method including controlling the laser by means of a control device such that it emits pulsed laser pulses in a shot sequence into the cornea. The interfaces are generated by the generation of a plurality of cavitation bubbles generated by photodisruption by means of an interaction of the individual laser pulses with the cornea. A minimum diameter of the volume body orthogonal to an optical axis of the volume body is determined depending on at least one diopter value for the volume body and on a preset thickness of the volume body viewed in a direction of the optical axis. A treatment apparatus, a computer program product and a computer-readable storage medium are also disclosed.

A planning device generating control data for a treatment apparatus for cornea transplantation using a laser device to separate a corneal volume by at least one cut surface in the cornea and to separate a transplant, from a surrounding transplantation material by at least one cut surface, wherein the planning device includes an interface supplying measurement data relating to parameters of the cornea. A computer defines a corneal cut surface which confines the corneal volume to be removed, and determines a transplant cut surface by using the transplantation material data and depending on the defined corneal cut surface. The transplant cut surface confines the transplant, and the computer generates one control data for each cut surface to control the laser, wherein the respective cut surfaces can be produced by the laser to isolate the corneal volume and the transplant and to make them removable.