METHOD FOR SCLERAL FIXATION OF TORIC POSTERIOR-CHAMBER INTRAOCULAR LENS IN CASE OF FAILURE OF LENS LIGAMENTOUS APPARATUS OR ABSENCE OF CAPSULAR BAG Russian patent published in 2022 - IPC A61F3/00 A61F9/07 

FIELD: medicine; ophthalmology.

SUBSTANCE: first, before implantation of an intraocular lens (hereinafter – IOL), strong and weak corneal meridians are marked. At the same time, along the axis of the strong meridian, at a distance of 2 mm from the sulcus, a point of future fixation of IOL to the sclera is marked. Then, the conjunctiva is separated in zones perpendicular to the axis of the toric IOL. At the same time, IOL, before implantation, is sutured at the haptic root or through the haptic with two Prolene 8.0 threads, free ends of threads are coagulated to form thickenings, the first needle is passed through an injector, injected into the anterior chamber, passed under the iris, and pierced out at the calculated point on the sclera, using a conductor needle. IOL is laid in a cartridge and implanted to the posterior chamber of the eye. The second needle is injected through the main access into the anterior chamber, in a retrograde way with thread forward, intercepted with tweezers through paracentesis, and laid at the calculated point of the sclera, also using the conductor needle, IOL is oriented along the axis by tensioning thread. After centering of IOL relatively to the center of the cornea, ends of threads brought to the sclera surface are coagulated to form thickenings and immersed in the sclera under the conjunctiva. Then, U-shaped suture is formed with Nylon 10/0 thread, while the conjunctiva is preliminary separated, and marking is carried out: at a distance of 2.5 mm from the sulcus and at a distance of 2.5 mm from the axis of the weak meridian, points of thread input to the sclera are marked. After that, the needle with thread is passed through the marked point under IOL, perpendicular to its axis, and output to the opposite side of the sclera, using the conductor needle, at a free end of thread, thickening is formed. Then, the needle is similarly output to the opposite side of the sclera, threads are pulled, the needle is cut, at the second end of thread, thickening is also formed, the conjunctiva is sutured.

EFFECT: method allows for correction of aphakia and compensation of corneal astigmatism, provides scleral fixation of a toric posterior-chamber IOL.

1 cl, 1 ex, 4 dwg