Abstract: A description has been provided herein of an intrastromal segment especially designed for use as a prosthesis inside the corneal tunnel of patients suffering from keratoconus. The segment consists of a lengthened body of variable dimensions in the form of an arc with noticeably rounded ends, devoid of any communicating orifice, and endowed with a transverse section that may be triangular, trapezoidal, hexagonal or oval, with at least three marks connecting to the narrowest side for which two ends aid the safe handling of the segment and the mid-section mark serves as a positional reference point. The segment will be connected to a disposable guide track along which it moves and from which it is pushed into the implantation position.

Abstract: A description has been provided herein of an intrastromal segment especially designed for use as a prosthesis inside the corneal tunnel of patients suffering from keratoconus. The segment consists of a lengthened body of variable dimensions in the form of an arc with noticeably rounded ends, devoid of any communicating orifice, and endowed with a transverse section that may be triangular, trapezoidal, hexagonal or oval, with at least three marks connecting to the narrowest side for which two ends aid the safe handling of the segment and the mid-section mark serves as a positional reference point. The segment will be connected to a disposable guide track along which it moves and from which it is pushed into the implantation position.

Abstract: A device has been described here which is used as a means of implanting an intrastromal prosthesis, consisting of a segment or ring, on the inside of the patient's corneal tunnel. The implanting device eliminates the need to use conventional forceps and includes for this purpose an injector with a support track for the implant segment, attached to a ring carrier piece coupled to the first end of a cylinder base or tunnel. A Delhom apparatus, activated by rotation, includes a central arm with an impeller tip for the insertion of the segment, and a block cover coupled to the opposite end of the cylinder base or tunnel includes a rod that extends along its length, finished in a tip positionable on the inside of the track against the back end of the segment, and a recess to accommodate the carrier arm of the impeller tip and the ring-holder clamp.