The invention relates to a method for providing control data for an eye surgical laser (12) of a treatment apparatus (10) for removing tissue (14). A control device (18) ascertains (S10) a corneal geometry of a cornea (22) and an ocular wavefront (32) of a human or animal eye (16) from predetermined examination data. Further, a corneal wavefront (28) is ascertained (S12) from the corneal geometry by means of a physical model, an internal wavefront (34) is calculated (S16) from a difference of the ocular wavefront (32) and the corneal wavefront (28), a wavefront (36) to be achieved is calculated (S18) from a difference of a preset target wavefront (38) and the calculated internal wavefront (34), a target corneal geometry (40) is ascertained (S20) from the wavefront (36) to be achieved by means of the physical model, wherein the target corneal geometry (40), which results in the wavefront (36) to be achieved upon a passage of the input wavefront (30) through a target cornea with the target corneal geometry (40), is determined by means of the physical model, a tissue geometry to be removed is calculated (S22) from a difference of the corneal geometry and the target corneal geometry (40), and control data for controlling the eye surgical laser (12), which includes the tissue geometry to be removed for removing the tissue, is provided (S24).

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.

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.

A method for to calculation of actual astigmatism correction and nomographs for corneal laser treatment includes performing a post-operative measurement of the cornea of a patient to determine actual astigmatism coefficients. The actual astigmatism coefficients are compared against the expected astigmatism coefficients to generate a nomograph value or a nomograph curve over a sample population. The nomograph is used to calibrate subsequent laser treatments for improved accuracy of clinical results.

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.

A method of treating a cataractous lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern, delivering the treatment pattern to the lens of the patient's eye to create a plurality of cuts in the form two or more different incisions patterns within the lens to segment the lens tissue into a plurality of patterned pieces, and mechanically breaking the lens into a plurality of pieces along the cuts. A first incision pattern includes two or more crossing cut incision planes. A second incision pattern includes a plurality of laser incision each extending along a first length between a posterior and an anterior surface of the lens capsule.

Control apparatus (1) for controlling the dosing of a chromophoric agent (100) in a corneal tissue (101), comprising: a first source (2) for irradiating the corneal tissue (101) with at least a first electromagnetic radiation (21); first measurement means (3) for measuring a first spectroscopic parameter (31), such as the fluorescence intensity or the diffused intensity; a processing unit (4) configured to calculate a factor (C) representative of the concentration of the chromophoric agent (100) inside the corneal tissue (101) in response to at least two measurements of the first spectroscopic parameter (31), of which one measurement is indicative of the energy perturbation caused by the first electromagnetic radiation (21) in the corneal tissue (101) without the chromophoric agent (100) and the further measurement is indicative of the energy perturbation caused by the first electromagnetic radiation (21) in the corneal tissue (101) containing the chromophoric agent (100).

A planning device for generating control data, a treatment apparatus for refraction correction eye surgery and a method for generating control data for such a treatment apparatus which allows an improved subsequent refraction correction. The planning device includes a calculation processor for defining a cut surface of the cornea for post-treatment, wherein the calculation device is designed such that a change of thickness of the epithelium is taken into account in the calculation, which was caused essentially by a pretreatment.

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.

A structure in an irido-corneal angle of an eye is located by directing a laser beam toward the irido-corneal angle of the eye, and advancing a focus of the laser beam to a location in the irido-corneal angle, which location is at or near the target structure. The focus is determined to be at or near the structure based on changes in an intensity of a spot of second harmonic light generated by an encounter between the focus and tissue.