Abstract: A phoropter for testing an individual's eyes when observing a target, the phoropter including two optical units for the two eyes of the individual, each having an entry on the target side, an exit aperture on the individual's side, and an optical system for providing different vision correction powers to the corresponding eye of the individual, moving means adapted to adjust the relative position of the two optical units, a partially reflecting mirror situated between the optical units and the target, an image acquiring device directed toward the partially reflecting mirror so as to acquire images of the eyes of the individual looking at the target through the two optical units, and an image displaying device suitable to display the acquired images.