Example eye treatments detennine an area at a surface of a cornea for delivery of a cross-linking agent. The example treatments disrupt tissue at the area at the surface of the con1ea up to a depth corresponding to apical layers of superficial squamous cells of the cornea, e.g., no greater than approximately 10 μm to approximately 15 lm. The example treatments apply a cross-linking agent to the area at the surface of the cornea. The cross-linking agent is transmitted through the disrupted area at a greater rate relative to non disrupted areas of the cornea. The example treatments deliver photoactivating light to the cornea. The photoactivating light activates the cross-linking agent to generate cross-linking activity in the cornea.

An ophthalmic surgical laser system includes: a laser that produces a pulsed laser beam having a pulse energy and pulse repetition rate; a high frequency fast scanner; an XY-scan device; a Z-scan device; and a controller. The controller controls the high frequency scanner to produce a scan line having a scan width; controls the XY-scan device and the Z-scan device to carry out of first sweep of the scan line in a first sweep direction and to carry out a second sweep of the scan line in a second sweep direction that is not parallel to the first sweep direction thereby defining an overlap region. At least one of the pulse energy, repetition rate, XY-scan speed, and the scan width is varied so as to accelerate the cutting speed and reduce the exposure of ophthalmic tissue in the overlap region to multiple exposures of laser pulses configured to modify ophthalmic tissue.

A method of generating three dimensional shapes for a cornea and lens of an eye, the method including illuminating an eye with multiple sections of light and obtaining multiple sectional images of said eye based on said multiple sections of light. For each one of the obtained multiple sectional images, the following processes are performed: a) automatically identifying arcs, in two-dimensional space, corresponding to anterior and posterior corneal and lens surfaces of the eye by image analysis and curve fitting of the one of the obtained multiple sectional images; and b) determining an intersection of lines ray traced back from the identified arcs in two-dimensional space with a known position of a section of space containing the section of light that generated the one of the obtained multiple sectional images, wherein the determined intersection defines a three-dimensional arc curve. The method further including reconstructing three-dimensional shapes of the anterior and posterior cornea surfaces and the anterior and posterior lens surfaces based on fitting the three-dimensional arc curve to a three-dimensional shape.

A planning device generating control data for a treatment apparatus for refraction-correcting ophthalmic surgery is provided, said apparatus using a laser device to separate a corneal volume, which is to be removed for correction, from the surrounding cornea by at least one cut surface in the cornea of an eye, said planning device comprising an interface for receiving corneal data including information on pre-operative cuts which were generated in a previous ophthalmic operation, and computing means for defining a corneal cut surface which confines the corneal volume to be removed, said computing means defining the corneal cut surface on the basis of the corneal data and generating a control dataset for the corneal cut surface for control of the laser device.

The invention relates to a method for providing control data of a laser device (10) for the non-destructive laser-induced property change of a polymer structure (14). As steps, the method includes ascertaining (S10) a respective irradiation parameter range for preset irradiation parameters of the laser device (10) by means of an irradiation model, wherein a property change model is provided in the irradiation model, in which a caused property change of the polymer structure (14) is modelled depending on the irradiation parameters, wherein a destruction threshold value model is provided in the irradiation model, in which at least one threshold value for a laser-induced optical breakthrough of the polymer structure is modelled depending on the irradiation parameters, and wherein the caused property change from the property change model is optimized while limiting by the threshold value from the destruction threshold value model for ascertaining the irradiation parameter ranges.

A method is disclosed for controlling a laser device for a laser-induced refractive index change (URIC) of a polymer structure. The laser device is controlled by a control device such that it emits pulsed laser pulses in a shot sequence in a preset pattern into the polymer structure. The laser pulses are emitted with preset irradiation parameters for refractive index change of the polymer structure, wherein for adjusting an order of magnitude of the refractive index change, a spatial pulse distance of the laser pulses in the polymer structure is adapted and the further irradiation parameters are kept within respective preset irradiation parameter ranges.

The invention relates to a treatment apparatus (1) for an eye treatment, at least comprising: at least one laser beam source (3) configured for emission of a laser beam (2), at least one beam exit device (9), which is configured to direct the laser beam (2) to an eye (11) to be treated, at least one transfer optics (6), which is configured to feed the laser beam (2) along a respective optical path (21) to the at least one beam exit device (9), and a control device (14), which is configured to retrieve a predetermined eye treatment configuration (15) from a storage device (13), on which multiple eye treatment configurations (12) are stored, to adjust the at least one laser beam source (3) for generating the laser beam (2) of a pulse duration (4) to be adjusted according to the predetermined eye treatment configuration (15) of the eye treatment configurations (12), and to adjust the at least one transfer optics (6) for providing a predetermined numerical aperture (10) of the transfer optics (6) according to the predetermined eye treatment configuration (15).

Projection of visible, non-treatment light onto an eye to illuminate specific areas of the surgical field is disclosed herein. A surgical system may include a surgical console; a microscope communicatively coupled to the surgical console; a camera communicatively coupled to the surgical console; and a projector operable to project light onto an eye. The projector may be communicatively coupled to the surgical console. A method for light projection may include collecting information from an eye using a camera; determining the light projection based, at least in part, on the collected information; and projecting visible, non-treatment light onto the eye using a projector.

A planning device that generates control data for a treatment apparatus which produces at least one cut surface in the cornea by application of a laser device. The invention further relates to a treatment apparatus having a planning device of the aforementioned type and a method for generating control data for this treatment apparatus, and also to a method for eye surgery, at least one cut surface being produced by application of a treatment apparatus with a laser device. The planning device includes a calculation application that defined corneal cut surfaces, which facilitates a largely free assignment to geometric variables of the eye. The method for generating control data includes generating a control data record for the corneal cut surface that controls the laser device, wherein the planning device, during the determination of the cut surfaces, facilitates a largely free assignment to geometric variables of the eye.

A laser source for an ophthalmic surgical system includes a femtosecond seeder, an amplifier, a femtosecond pulse portion, a nanosecond pulse portion, and one or more switches. The femtosecond seeder generates femtosecond pulses. The amplifier amplifies laser pulses, which include the femtosecond pulses and nanosecond pulses. The amplifier amplifies the laser pulses by amplifying the femtosecond pulses and generating and amplifying the nanosecond pulses. The femtosecond pulse portion alters and outputs the femtosecond pulses, and the nanosecond pulse portion alters and outputs the nanosecond pulses. The switches receive the laser pulses from the amplifier, and direct the laser pulses to the femtosecond pulse portion or the nanosecond pulse portion. In other embodiments, the laser source includes a femtosecond seeder and a nanosecond seeder that generates the nanosecond pulses.