METHOD FOR KERATOPROSTHESIS OF BURN AND VASCULAR LEUKOMAS (VERSIONS) Russian patent published in 2015 - IPC A61F2/14 A61F9/07 

FIELD: medicine.

SUBSTANCE: according to the first version of the method, a blind-ended corneal incision is made of two thirds of its thickness. The leukoma is layered along its entire area to form lower and upper flaps. A through hole is cut out in the leukoma with a 3 mm bone trephine. The formed upper leukoma flap is turned away. Three pockets is cut out within the limb in the position of 12, 5 and 7 o'clock in line with a diameter of three arched elastic fixing members of the keratoprosthesis. The keratoprosthesis is laid on the lower leukoma flap. The elastic fixing elements are tucked into the formed limb pockets. The upper leukoma flap with the through hole is laid on an optical cylinder of the keratoprosthesis. The upper leukoma flap is fixed with separate interrupted polypropylene sutures 10.0. According to the second version of the method, a donor's blind-ended corneal incision is made of two thirds of its thickness. It is layered along its entire surface to form lower and upper flaps. A corneal trepanation area is marked with an 8 mm bone trephine. A hole is created in the centre of the cornea in the upper layered flap with the 3 mm bone trephine. The donor's corneal graft is cut out 8 mm in diameter. The lower flap is removed. The upper surface of the keratoprosthesis with three arched elastic fixing elements is covered with the upper donor's corneal flap. They are fixed with three interrupted polypropylene sutures 10.0. A keratoprosthesis and cornea complex is formed. The patient's leukoma trepanation area is marked with the 8 mm bone trephine. The patient's upper leukoma flap is cut out with the 8mm bone trephine. The upper flap is removed. Three pockets is cut out within the patient's limb in the position of 12, 5 and 7 o'clock in line with the diameter of the arched elastic fixing members of the keratoprosthesis. A hole is created in the patient's lower leukoma flap with the 3 mm bone trephine. The keratoprosthesis and cornea complex is laid with its lower surface facing the patient's lower leukoma flap. The optical cylinder of the keratoprosthesis is inserted into the hole of the patient's lower leukoma flap. The keratoprosthesis and cornea complex sutures are removed. The elastic fixing elements are tucked into the formed limb pockets in the position of 12, 5 and 7 o'clock. The keratoprosthesis and cornea complex and the patient's lower leukoma flap are fixed with separate interrupted polypropylene sutures 10.0.

EFFECT: more effective treatment and rehabilitation of the patients by creating the stable position of the keratoprosthesis, reducing a probability of the keratoprosthersis rejection and a risk of developing tissue necrosis by the keratopsrosthesis structure adjusted to the leukoma shape and a minimum pressure of the elastic support portion of the keratoprosthesis structure on the leukoma stromal layers.

2 cl, 3 ex