METHOD OF INTRAOPERATIVE INDUCTION OF POSTERIOR VITREOUS DETACHMENT USING PREOPERATIVE SPECTRAL OPTICAL COHERENCE TOMOGRAPHY DATA Russian patent published in 2023 - IPC A61F9/07 A61F9/08 A61B3/10 A61B6/02 

FIELD: medicine; ophthalmology.

SUBSTANCE: preoperatively, using spectral optical coherence tomography (SOCT), an area is determined in the parapapillary zone, outside the zone of the papillomacular bundle and the macular region, where there is a local detachment of the posterior hyaloid membrane (PHM) with a distance between the PHM and the retina of at least 150 μm. Intraoperatively, in the above zone at a distance of 300–500 microns from the border of the optic nerve head (OD), a microperforation is applied in the BGM with a vitreotomy. In this case, the distance from the edge of the vitreotome to the surface of the retina is 0.3–0.5 mm, and the window of the vitreotome is placed parallel to the surface of the retina and directed opposite the center of the optic disc. Then, in vacuum mode, the fibers of the vitreous body (VB) are aspirated into the vitreotome window until a semilunar fold of the PHM appears along the edge of the optic disc. Further, leaving the vitreous motionless for 2–3 seconds, local vitrectomy is performed with the capture and perforation of the BGM. Then, in the vacuum mode, by movements from the optic disc to the periphery, the cortical layers of the optic nerve are lifted by the aspiration method and the PHM is torn off from the edge of the optic disc, separating the optic nerve from the surface of the retina from the center to the periphery.

EFFECT: method provides rapid intraoperative induction of posterior vitreous detachment without the risk of iatrogenic damage to the fundus structures and without the use of dyes.

1 cl, 1 ex