The present invention relates to an instrument for eye (E) examination, the system including an imaging system (2) to produce images of a portion of the eye to be examined； a projection system (3) to project a stimulus of visible light on a location in the portion of the eye to be examined and a background light on the portion of the eye to be examined； in which the projection system (3) has a telecentric design to uniformly project the stimulus and the background and includes a light source (114) and a movable mirror (112) which is moved according to the location of stimulus projection.
