Patent ID: 8057041

Claim:
A handheld measuring appliance for measuring at least one analyte in an eye fluid in an eye, having a measuring system which is set up to measure at least one property of the at least one analyte and/or at least one analyte-dependent change of property in at least one ocular sensor in the eye fluid, and a positioning system which is set up to measure a three-dimensional positioning, wherein the three-dimensional positioning comprises a distance between at least one measurement location in the eye and the handheld measuring appliance and also at least one further positioning co-ordinate, wherein the positioning system is selected from the group consisting of: a camera system; an image recognition system; a triangulation system; a propagation time measuring system; a 1-, 2- or 3-dimensional intensity measuring system for at least one signal from a divergent electromagnetic and/or acoustic beam; and a 2- or 3-dimensional magnetoresistive measuring system.