Disclosed is an apparatus for examining the field of vision, having a scanning device, which is provided with beam deflecting and beam imaging elements, via which the illumination light beam from an illumination light source is guided onto the region of the fundus oculi to be imaged and, if need be, the light reflected from the fundus oculi is guided to a detector device, from the time-sequential output signal of which an evaluation and synchronization unit generates an image of the scanned section by points, and having a control unit, which controls the intensity of the illumination light beam scanning the fundus oculi in such a manner that marks, respectively patterns, are projected onto a predeterminable region of the fundus oculi with predeterminable brightness, which the person under examination perceives, respectively does not perceive in the event of defects in the field of vision. The present invention is distinguished by the fact that in order to set a specific value of brightness of the marks, respectively of the patterns, the control unit switches the illumination light beam within the time span, during which the illumination light beam illuminates a scanning point, from a first intensity value to at least a second intensity value for a specific fraction of this time span.
Apparatus for examining the field of vision