The device (1) has an optical triangulated measuring system (11) determining a geometric reference in an eyelet (2) through triangulation. An optical interferometric measuring system (12) determines geometric detail structures in the eyelet by optical ferometric based on the geometric reference in the eyelet determined by the optical triangulated measuring system. The optical triangulated and interferometric measuring systems are coupled, and a light projector (112) projects a light gap (114). An independent claim is also included for an ophthalmologic measuring method for determining a geometric structure of eyelet.
