Patent ID: 8100531

Claim:
An ophthalmoscope for examining a patient's eye, the ophthalmoscope comprising: an illumination device for generating an illumination beam; illumination imaging optics for imaging the illumination beam onto the eye; a scanning device for scanning the illumination beam over the eye; an observation device which comprises an electronic sensor with an array of photosensitive pixels, which can respectively be activated and/or read out in rows; observation imaging optics for imaging an observation beam, generated by reflection of the illumination beam from the eye, onto the observation device; an electronic shutter for excluding stray light from the observation beam, including an electronic drive circuit for reading out at least one pixel row of the sensor, wherein the ophthalmoscope comprises an electronic control unit which is adapted to control the scanning device and the electronic drive circuit so that the scanning of the illumination beam over the eye is synchronous with the change of the pixel row currently to be read out; an optical system for projecting an additional beam onto a background of the eye in a separate beam path; one or more tiltable mirrors that are arranged such that translation of the additional beam on the background of the eye can be achieved by tilting one or more of the tiltable mirrors respectively about one or more axes; and a drive unit for driving the one or more tiltable mirrors, wherein the drive unit is adapted to determine a time window, in which the additional beam is switched on from a quantity that correlates a position of a spot generated by the additional light beam in an image field to a start time of shutter movement.