Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.

Abstract: A method for testing a laser device configured to emit pulsed, focused laser radiation includes providing an artificial eye body with a pattern that simulates a pupil and/or an iris structure. An irradiation test object is arranged above the pattern. The irradiation test object is separate from the eye body and is made of a material that is modifiable by the laser radiation. The laser radiation is applied to the irradiation test object according to a predefined application profile, so that a material modification that corresponds to the application profile is generated in the irradiation test object.

Abstract: An ophthalmic laser processing apparatus comprises: a laser device that outputs a pulsed laser beam towards an eye; an image capturing device that captures an image of the eye and provides image data; and a control device that detects eye movement based on the image data and controls the beam focus based on a predetermined eye processing pattern and the eye movement. The apparatus further comprises a visualization device controlled by the control device to output a visualization of a graphical illustration. The graphical illustration represents at least one of (a) a value of an eye parameter determined on the basis of the image data; (b) a frequency distribution of a value of an eye parameter determined on the basis of the image data data; and (c) a range of values of a pupil diameter determined on the basis of the image data.

Abstract: A marker device for producing paint marks on an eye is disclosed. The marker device comprises a handling unit and a marker unit coupled to the handling unit for rotation with respect to the handling unit about a rotational axis. The marker unit includes at least two spaced apart marking surfaces and has a rotationally symmetric distribution of weight with respect to the rotational axis. A coupling between the handling unit and the marker unit permits the marker unit to rotate, due to gravity, relative to the handling unit into an equilibrium position.

Abstract: A method for testing a laser device configured to emit pulsed, focused laser radiation includes providing an artificial eye body with a pattern that simulates a pupil and/or an iris structure. An irradiation test object is arranged above the pattern. The irradiation test object is separate from the eye body and is made of a material that is modifiable by the laser radiation. The laser radiation is applied to the irradiation test object according to a predefined application profile, so that a material modification that corresponds to the application profile is generated in the irradiation test object.

Abstract: An eye model comprises a sclera simulation that comprises a bright plastic material, the plastic material comprising a polyvinyl chloride at least as the main component. The eye model also includes a pattern that contrasts in color with the sclera simulation, the pattern simulating an eye pupil and/or an iris structure. In a method for producing the eye model, a plate-shaped or rectangular blank of the plastic material having two oppositely situated blank flat sides is used, from which an eye body is separated by cutting or chipping machining. The separated eye body has a flattened area that is formed from a first blank flat side, and a convexly curved peripheral surface that surrounds the flattened area in a ring-like manner.

Abstract: According to certain embodiments, a method for laser cutting treatment of a human eye comprises: determining position information of a pupil center of the eye in relation to a point of minimal corneal thickness in an undeformed state of the eye; locating the point of minimal corneal thickness in a flattened state of the eye, in which the eye is deformed by contact with a patient adapter of a laser device; and aligning a pulse firing pattern for laser radiation pulses of the laser device, based on a position of the located point of minimal corneal thickness and the determined position information. In embodiments, the pulse firing pattern represents, for example, a lenticular or doughnut-shaped intracorneal tissue volume which is to be removed from the cornea of the eye.

Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.

Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.

Abstract: A fibre coupler is provided, which includes a tubular enveloping structure and several optical fibres arranged in the enveloping structure, each of which has a fibre core and a fibre cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fibre core to the diameter of the fibre cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fibre to the diameter of the fibre core, increases in the first direction for each optical fibre.