Carl Zeiss Meditec Ag

Carl Zeiss Ag

Carl Zeiss Smt Gmbh

Christopher Weth

Christoph Hauger

Udo Dinger

Marco Wilzbach

Markus Seesselberg

Tobias Bühren

Ferid Bajramovic

Michael Trost

Martin Volkwardt

Wei-Jun Chen

Michael Zimmermann

Martin Koerner

Alexander Schroer

A method for generating a brightness contribution for a picture element of an image includes providing a first data record including data which describe the effect on light rays of the lens, providing a second data record including data about a point of incidence of a light ray on the image recorder and about a virtual front surface, providing a transformation rule, calculating a first point of intersection of the light ray with the virtual front plane and a direction of the light ray at the first point of intersection by applying the transformation rule to the first and second data records, determining the brightness contribution of the light ray, storing an information item regarding the calculated brightness contribution. The first data record includes data about a second surface and the second data record includes data about a second point of intersection of the light beam with the second surface.

Method for simulating an optical image representation

A method for selecting an intraocular lens (IOL), to optimize the results of refractive procedures on the eye. According to the invention, the method for selecting the IOL includes: a) determining the required biometrical parameters of the eye; b) using the parameters for a corresponding eye model; c) evaluating, using ray tracing, the data of an IOL to be implanted; d) selecting, on the basis of said data, an IOL to be implanted; and e) repeating the method steps c) and d) for further suitable IOLs. To optimize the method, different measuring methods are used to determine the biometrical parameters, a corresponding patient-specific eye model is identified, and, when selecting the IOL, additional retinal image metrics are taken into consideration alongside the determined data. The method according to the invention permits the optimized selection of a spherical, aspheric, toric or multifocal IOL for implantation.

Method for optimizing the selection of the IOL to be implanted in an eye

A method of inserting an intraocular lens into an eye comprises: determining preoperative values of an eye; selecting an intraocular lens based on the preoperative values; inserting the intraocular lens into the eye; determining intraoperative values of the eye; providing an eye model, wherein the eye model includes plural parameters; determining the second value representing a postoperative visual defect of the eye using the eye model, wherein the preoperative values of the eye are assigned to a first subset of the plural parameters of the eye model and wherein the intraoperative values of the eye are assigned to a second subset of the plural parameters of the eye model; and correcting the position and/or the orientation of the inserted intraocular lens or inserting a different intraocular lens based on the value representing the postoperative visual defect of the eye.

Eye surgery system and method of inserting an intraocular lens

A bundle-guiding optical collector collects an emission of a radiation source and forms a radiation bundle from the collected emission. A reflective surface of the collector is the first bundle-forming surface downstream of the radiation source. The reflective surface is formed such that it converts the radiation source into a family of images in a downstream plane. The family of images includes a plurality of radiation source images which are offset to each other in two dimensions (x, y) in a direction perpendicular to the beam direction of the transformed radiation bundle and are arranged relative to each other in a non-rotationally symmetric manner relative to the beam direction of the transformed radiation bundle. The transformed radiation bundle in the downstream plane has a non-rotationally symmetric bundle edge contour relative to the beam direction of the transformed radiation bundle. The result is a collector in which the radiation bundle shape generated by the collector. In other words, the illumination distribution generated by the collector in a defined manner in the plane downstream of the collector has a shape which is freely selectable to the greatest possible extent.

Bundle-guiding optical collector for collecting the emission of a radiation source

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Aalen, Germany

Christopher Weth