Ocular vision system intended to be worn by a user, the ocular vision system is equipment intended to be worn fixed relatively to the user's head, said ocular system comprising a display module (2.1), the display module comprising a transparent optical guide (2.4) adapted for propagating, by total internal reflections, a light beam transporting an image (2.6) as far as an extraction section of said optical guide, said ocular vision system comprising: - means (4.9, 6.1) for positioning the optical guide in a first position in which the extraction zone is placed on a first axis corresponding to a nominal axis of sight (7.2) of the eye of the user; - means (4.9, 6.1) for positioning the optical guide in a second position in which the extraction zone is placed on a second axis offset with respect to the nominal axis of sight of the eye of the user; and - means (4.4, 4.5, 4.9, 6.1) for rotating the optical guide with respect to a frame of the ocular vision system, when the user is wearing the ocular vision system, the means for rotating the optical guide being adapted for enabling the optical guide to pass from the first position to the second position and vice versa; characterised in that the means for rotating the optical guide are adapted for performing the rotation about an axis intended to pass substantially through the centre of rotation of the eye of the user, and in that, for rotating the optical guide between the first position and the second position, said ocular vision system comprises: - a stud holder (4.4) comprising at least one stud (4.9); and - an ocular vision system frame fixing and guiding support (4.5) comprising at least one oblong groove (6.1) intended to receive said stud, each groove being such that, when said stud is placed at one end of said groove, the optical guide is in the first position and, when said stud is placed at the other end of said groove, the optical guide is in the second position. - means (4.9, 6.1) for positioning the optical guide in a first position in which the extraction zone is placed on a first axis corresponding to a nominal axis of sight (7.2) of the eye of the user; - means (4.9, 6.1) for positioning the optical guide in a second position in which the extraction zone is placed on a second axis offset with respect to the nominal axis of sight of the eye of the user; and - means (4.4, 4.5, 4.9, 6.1) for rotating the optical guide with respect to a frame of the ocular vision system, when the user is wearing the ocular vision system, the means for rotating the optical guide being adapted for enabling the optical guide to pass from the first position to the second position and vice versa; characterised in that the means for rotating the optical guide are adapted for performing the rotation about an axis intended to pass substantially through the centre of rotation of the eye of the user, and in that, for rotating the optical guide between the first position and the second position, said ocular vision system comprises: - a stud holder (4.4) comprising at least one stud (4.9); and - an ocular vision system frame fixing and guiding support (4.5) comprising at least one oblong groove (6.1) intended to receive said stud, each groove being such that, when said stud is placed at one end of said groove, the optical guide is in the first position and, when said stud is placed at the other end of said groove, the optical guide is in the second position. - a stud holder (4.4) comprising at least one stud (4.9); and - an ocular vision system frame fixing and guiding support (4.5) comprising at least one oblong groove (6.1) intended to receive said stud, each groove being such that, when said stud is placed at one end of said groove, the optical guide is in the first position and, when said stud is placed at the other end of said groove, the optical guide is in the second position.