METHOD OF STEP-BY-STEP CHROMOVITRECTOMY AT DEEP PROLIFERATIVE DIABETIC RETINOPATHY BY USING VITREOCONTRAST SUSPENSION Russian patent published in 2018 - IPC A61F9/07 A61K49/00 A61P27/00 A61B17/3201 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, specifically to ophthalmology. Surgical treatment of proliferative diabetic retinopathy comprises three-port transciliary vitrectomy, discission of Vitreoschisis layers, epiretinal schwart (ES) and epiretinal membranes (ERM), membrane peeling with subsequent endolaser coagulation of retina and tamponade of vitreal cavity with a gas-air mixture. And after transciliary vitrectomy, 0.1 ml of the Vitreocontrast suspension are injected into the vitreous humor by using a 25 G cannula inserted into the vitreous humor cavity and directed to the macula zone. Discration of Vitreoschism layers, ES and ERM are performed over the macula area with endovitreal scissors, starting from the center towards the periphery. Multiple layer-by-layer contrasting is carried out by introducing a Vitreocontrast suspension and discration of these layers until the internal limiting membrane (ILM) is visualized. After that, membrane peeling of the ILM is carried out. Discission of remaining Vitreoschisis layers, ES and ERM is further performed, for this purpose, the guillotine endovitreal scissors area rests against the surface of the retina in the macula area and the scissors are moved towards the periphery, entering paramaculously under the ERM and ES, and trey are cut into 3–10 sectors, starting from the center. Free fragments of ERM and ES, facing the vitreous humor side, are further removed with vitreotom while maintaining the adhesion of the base of ERM and ES to the retina at its periphery. Surgery is completed with endolaser coagulation of the retina and a tamponade of the vitreal cavity with a gas-air mixture.

EFFECT: method increases the visual function of the eye by reducing postoperative complications such as bleeding from the cleavage on the retina, traction retina detachment caused by incomplete removal of epiretinal membranes (ERM), epiretinal schwart (ES), vitreoschisis.

1 cl, 2 ex