METHOD OF IMPLANTATION AND SUTUTRE FIXATION OF S-SHAPED INTRAOCULAR LENS TO IRIS Russian patent published in 2018 - IPC A61F9/00 A61F9/07 

FIELD: medicine.

SUBSTANCE: invention relates to the field of medicine, namely, to ophthalmic surgery. For implantation and suture fixation of the S-shaped intraocular lens (IOL) to the iris in the absence of capsular support, the pupil is narrowed and lens implantation through a small tunnel incision into the anterior chamber, a consecutive establishment behind the iris of a first haptic element, suture fixation of the IOL in the area of the induced haptic element, then the second haptic element, and the suture fixation of the IOL in the zone of the second haptic element. Fixation is performed by puncturing the lens with a needle, first, using tweezers inserted through the paracentesis into the anterior chamber, the edge of the optics of the IOL is seized next to the haptic element, lead this haptic element through the pupil beyond the iris and, continuing to hold the lens with tweezers, draw a suture needle through the paracentesis in the cornea, in the sector of the haptic connected to the iris, further, the iris is pierced by a needle 1.5–2.0 mm from the pupillary margin, after which the needle, bending over the haptic element, is punctured through the lens at a point located in the middle of the base of the haptic element, or puncture the needle, moving from this point along the axis of the lens, which passes through the middle of the base of one and the other haptic element, by up to 0.5 mm in one direction or the other. Further, the needle is punctured into the anterior chamber through the iris at a distance of 1.5–2.0 mm from the pupillary edge and at a distance of 1.5–2.0 mm from the initial needle injection into the iris. Then puncture the needle through the cornea to the outside, cut the thread. After this, a second haptic element is formed behind the iris, the lens is centered and likewise fixed to the iris from the diametrically opposite side relative to the axis of the lens that passes through the middle of the base of one and the other haptic element. After this, opposite each haptic element, the ends of the filament are brought together into the corresponding paracentesis and one and the second non-coarse sutures are sequentially tightened. Both needle pricking through the lens is performed at the same distance from the optical center of the lens.

EFFECT: method allows to achieve reliable fixation of the IOL in the posterior chamber in the absence of capsular support and minimal postoperative complications associated with lens decentration.

1 cl, 1 dwg, 2 ex