METHOD FOR REPOSITION AND ATTACHMENT OF A DISLOCATED INTRAOCULAR LENS TO AN IRIS Russian patent published in 2022 - IPC A61F9/07 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to ophthalmology, and can be used for reposition and attachment of a dislocated intraocular lens (IOL) together with a capsular sac in case of lens ligamentous apparatus failure. For this purpose, intraoperatively on the narrow pupil, after the main incision and the first paracentesis, the anterior chamber is filled with a viscoelastic preparation, using a rotary hook centering a dislocated complex "IOL-capsular bag", further, the pupillary edge of the iris is progressively shifted to the periphery with the same rotary hook in four quadrants to assess the state of the capsular sac and the projection of the haptic elements. Further, two colobomas are performed, one coloboma above each haptic element with diameter of 0.2–0.3 mm, at 2.0 mm from the pupillary edge of the iris. Thereafter, the needle with the suture enters the anterior chamber through the paracentesis and passes through one of the colobomas bypassing the iris. Anterior leaflet of a lens capsule is pricked in, passing under a haptic element located under this coloboma, with a posterior capsule capture. Needle is brought out, successively piercing the capsular sac, the iris at distance of 0.5 mm from the edge of coloboma and 2 mm from the pupillary edge of the iris, and the cornea. By means of a hook, the loop is brought out through the first paracentesis, passed through the loop, the free end of the suture is made three turns around the loop, this action is repeated three times, forming successively three knots. Then a second paracentesis is performed, and the above sequence of actions is repeated with another coloboma and a haptic element located under it.

EFFECT: invention allows to visualize haptic elements of the dislocated IOL, provides control of their suturing depth to the iris, thereby preventing the onset of pigment glaucoma, improves hydrodynamics, which, in turn, prevents the onset of hypertension in this category of patients, and also provides prevention of obturation in the area of the pupil with the hemmed complex due to the implementation of the colobomas.

1 cl, 2 ex, 1 dwg