A device for improving the vision of an eye of a human being includes optical elements for forming an image of a scene; a controllable projector having an input and mounted to co-operate with the optical elements, and suitable for outputting a beam; a mirror; elements for linking the mirror to the orbit and to the projector in such a manner that the optical axis of the mirror passes through the center of rotation of the eye and that the mirror is on the light path of the beam; a sensor for determining the rotation of the eye relative to its orbit, and elements for applying the signal output from the sensor to the input of the projector so as to cause the image light beam to be projected on a location of the mirror that is a function of the rotation of the eye in its orbit.