METHOD OF CENTRING AND FIXING DISLOCATED COMPLEX "INTRAOCULAR LENS - CAPSULAR BAG" Russian patent published in 2024 - IPC A61F9/07 A61F2/16 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to ophthalmology. Centring and fixation of the “intraocular lens — capsular sac” complex is performed. Paracentesis is performed at 12 o’clock, through which a viscoelastic is introduced into an anterior chamber, through paracentesis at 12 o’clock, a coloboma is made in an iris root with diameter of 0.2 mm by vitreous cutter. After that, a needle with a suture is pricked into the cornea at limb at 11:30 o’clock, the iris is punctured 2–3 mm from the lateral edge of the coloboma, passing the needle in the posterior chamber parallel to the iris in the pupil area, then the same needle is used to pierce the capsule with the upper haptic element in the pupillary zone and pricked out into the anterior chamber. Needle is delivered above the iris in the direction of the angle of the anterior chamber downwards and the needle is brought out, piercing cornea at 5:30 o’clock, the suture thus drawn is cut off above the eyeball. Further, microhook through paracentesis and coloboma enter under iris into posterior chamber, exit in the area of the pupil into the anterior chamber, and the output end of the suture is captured in its lower parts, and then it is brought out through the paracentesis in the same way. Then microhook through paracentesis enter anterior chamber into iris root zone at 11:30 o’clock, where the second end of the suture is grasped and brought out in the same way, by the ends of the suture brought into paracentesis at 12 o'clock, the captured upper haptic element of the “IOL-capsular sac” complex is pulled up so that a lower haptic element appears in the pupil area. Next step is to form a paracentesis and coloboma at 6 o’clock: the needle with the suture is delivered transcorneally at 5:30 o’clock. Iris is punctured at 2–3 mm from the lateral edge of the coloboma by passing the needle in the posterior chamber in the pupil area, the capsule is pierced, capturing the lower haptic element, with the pricked out into the anterior chamber. Needle is delivered over the iris in the direction of the angle of the anterior chamber and the needle is removed by piercing cornea at 11:30 hours, the delivered suture is cut off above the eyeball, and at 6 o'clock the microhook is inserted through the paracentesis and the coloboma under the iris into the posterior chamber. In the area of the pupil, the output upper end of the suture is captured in the upper portions of the anterior chamber, and the same way is brought out into paracentesis at 6 o’clock. Then the microhook is inserted into the anterior chamber through the paracentesis into the iris root zone at 5:30 o’clock, the second end of the suture is captured and brought out in the same way; the sutures are tied in paracentesis at 12 o'clock and 6 o'clock and the suture ends are cut off. Then the viscoelastic is washed out from the anterior chamber, the incisions are sealed by hydration.

EFFECT: method enables to control lens capsule piercing, preserve diaphragm function of iris and synchronous pupil consensual reaction, as well as preserve its cosmetic shape, stable and central position of IOL in relation to the optical axis of the eye in the postoperative period.

1 cl, 2 ex