POSITIONING OF AUTOSTEREOSCOPIC TABLET COMPUTER

Process for determining the correct positioning of an autostereoscopic tablet computer (10) used to perform fixation disparity measurements in a subject through haploscopic observation of targets or stimuli, wherein a test is performed by presenting the subject being examined, on said autostereoscopic tablet computer (10) with stimuli (S) perceived by one eye and other stimuli (S) perceived by the other eye, comprising the steps consisting of: - providing a static image, on a monitor (12) of the autostereoscopic tablet computer (10), of two indices (11a, 11b), one upper (11a) and the other lower (11b), having respective proximal ends and mutually aligned according to a vertical transverse median plane of the same monitor (12) containing the optical axis of said video camera means; - providing at least one image, on said monitor of the autostereoscopic tablet computer (10), of a stimulus (s) characteristic of the test; - at the same time shooting an image (F) of the face of the subject being examined, by means of said frontal video camera means of the autostereoscopic tablet computer (10) and displaying the same image on the same monitor (12), in the background with respect to said image of the stimulus (S) characteristic of the test and presented on the same monitor (12) with sufficient contrast to perceive said image (F) in the background.