Abstract: Disclosed are a method and a device for controlling an eye surgery system, wherein a light pattern is generated on an eye by an illumination device and is captured by a camera unit while the patient is in the position in which he or she will undergo the surgery. At least one property of the eye characterizing the current orientation of the eye during the surgery is determined from the light pattern by a computing unit.

Abstract: Disclosed are a method and a device for controlling an eye surgery system, wherein a light pattern is generated on an eye by an illumination device and is captured by a camera unit while the patient is in the position in which he or she will undergo the surgery. At least one property of the eye characterizing the current orientation of the eye during the surgery is determined from the light pattern by a computing unit.

Abstract: A method for determining the torsional component of an eye around the viewing direction comprises the steps: Recording an image of the eye (110); Extracting at least one “region of interest” (120) and transformation into a polar coordinate image (130); Detecting objects of at least one predefined object type in the polar coordinate image (140); Generating a function of the respective object type depending on the polar coordinate angle Phi (150); Generating a code from the functions of the object types depending on the polar coordinate angle Phi (160); and comparing the code (30) with a code being determined from a previous recording (170). The function of each object type is a 1-dimensional function, which is generated by combining (e.g. summarizing) along the radial component. A device for determining a measure of the torsional position of the eye position is designed for performing the method.