METHOD FOR INTRAOPERATIVE MARKING DURING IMPLANTATION OF A TORIC INTRAOCULAR LENS Russian patent published in 2022 - IPC A61B9/00 A61F9/07 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely ophthalmology. Preoperative marking of the horizontal meridian is performed under local anesthesia in an upright position using markers or taps and intraoperative marking. At the same time, marking is performed during the femtosecond laser stage of the operation after the main stages: capsulorexis and phacofragmentation, by forming two symmetrically arranged arcuate incisions with a diameter of 6.0 mm between the incisions in the projection of a given meridian. The opening angle of 15° and the cutting depth from the outer surface of the cornea to 70% of the thickness of the cornea or, by forming incisions in the thickness of the cornea, retreating 10% from the outer surface of the cornea to a depth of 70% of the thickness of the cornea, determined automatically by the technological capabilities of the built-in optical coherence tomograph in the femtosecond laser installation LenSx, making it possible to accurately compare the cylindrical component of the lens relative to the meridian with the greatest optical power.

EFFECT: method makes it possible to create anatomical landmarks corresponding to the meridian with the greatest optical power, while it has high visualization clarity, and minimize the phenomenon of parallax, as well as increase the functional results of the operation when correcting astigmatism during cataract surgery or refractive eye lens replacement with implantation of toric intraocular lenses.

1 cl, 2 ex