Abstract: An apparatus to automatically position and operate surgical instruments, particularly for refractive keratic surgery, particularly lamellar refractive surgery, which includes a device for correctly positioning the apparatus in correspondence with an operating cot; a device for vertically raising all the apparatus; a horizontal guide, a first support member slideably arranged on the horizontal guide, a horizontal linear actuator, which determines the slide in both directions of the support member on the horizontal guide; a vertical guide, integral with the first support member, and at right angles to the horizontal guide; a second support member slideable in both directions on the vertical guide by way of a first vertical linear actuator; a member for operating and supporting the surgical instrument, borne by the second support member; a horizontal plate integral with the support member and endowed with a second vertical linear actuator which allows its raising and lowering in an autonomous manner, and an arm

Abstract: A kerato-prosthesis for transcorneal implantation which comprises an optical part consisting of a biocompatible clear material in the shape of a small cylindrical frustum, and a supporting haptic part in the shape of a small disk which is drilled at the center and is made up of an alloplastic, biocompatible, synthetic, porous or of the closed cell type, which cannot be reabsorbed and is capable of allowing the growth of human tissues inside, both parts being connected to each other respectively at the points corresponding to a portion of the lateral surface of said small cylinder and of the inner peripheral edge of said hole, and a process for manufacturing said kerato-prosthesis.