The invention relates to an artificial cornea. The artificial cornea (22) comprises a transparent optical piece (26) placed in an orifice (24) formed in the cornea (10). Its rear end is joined to a support piece (30) by screwing. The support piece (30) is applied against the inner wall (18) of the cornea. In order to help keep the support piece (30) in position, the prosthesis can comprise a fixation piece (28) which exerts traction in the forward direction on the optical piece (26) and thus on the support piece (30). <IMAGE>