METHOD FOR REMOVAL OF FIBROSIS OF CAPSULAR BAG AND RETROPROSTHETIC MEMBRANE IN PATIENTS WITH APHAKIA AND PSEUDOPHAKIA AFTER KERATOPROSTHESIS BY MEANS OF THREE-PORT VITRECTOMY Russian patent published in 2025 - IPC A61F9/07 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, namely to ophthalmology. According to the first version, fibrosis of a capsular bag (FCB) and a retroprosthetic membrane (RPM) are removed by means of a three-port vitrectomy. Before surgical intervention in patients with aphakia, ultrasonic biomicroscopy and optical coherence tomography are performed, after which three ports 25G are installed at 4 mm from a projection of limb in upper-external, upper-internal and lower-external quadrants. Further, an infusion system, a light guide and a vitreous tube are introduced through the ports, the FCB is removed on the maximum area and the RPM is simultaneously excised behind the optical cylinder with the help of the vitreotome, followed by an anterior vitrectomy, followed by a fundus oculi examination. According to the second version, ultrasound biomicroscopy and optical coherence tomography are performed in the patients with pseudophakia before the surgical intervention, after which three 25G ports are installed at 4 mm from the projection of the limb in the upper-external, upper-internal and lower-external quadrants. Further, an infusion system, a light guide and a vitreous tube are introduced through the ports; the vitreous tube is inserted into the projection of the angle of the anterior chamber and the RPM is excised. Further, the vitreous tube is placed behind the capsular bag and the FCB is removed. Then an anterior vitrectomy is performed, after which the eye ground is examined. In the special case, if there is no pathology of the retina or vitreous body, the operation is completed by removing the ports and applying, if necessary, scleroconjunctival sutures. In a particular case, if there is a pathology of the retina or vitreous body, then vitrectomy and necessary manipulations on the retina are performed; the operation is completed by removing the ports and applying, if necessary, scleroconjunctival sutures.

EFFECT: group of inventions makes it possible to reduce the risk of complications and accelerate the visual rehabilitation of the patient, to remove the RPM and FCB over a long distance without damaging the optical cylinder of the keratoprosthesis and the optical part of the IOL, as well as if necessary, perform endovitrial intervention through the opening of the optical cylinder of the keratoprosthesis.

4 cl, 3 ex