FIELD: medicine.
SUBSTANCE: invention refers to medicine, namely to ophthalmology. Intrastromal pocket (ISP) is formed by means of femtosecond laser with energy value of not less than 110 %. Femtosecond laser handle is installed on the patient's leukoma centrally, optimum compression of the cornea is achieved, the trajectory of the femtosecond laser is manually positioned on the laser screen centrally, intraoperative optical coherence tomography (OCT) system is used to locate the area of the future ISP at depth of 2/3 of the corneal thickness. Femtodissection of the cornea is carried out to form an ISP, the major axis of which is 6.5 mm, the minor axis is 5.5 mm, the width of the entrance tunnel is 5.5 mm, length is 1.1 mm, located to the right of the edge of the ISP corresponding to the dimensions of the implanted support parts of keratoprosthesis, with an external opening on the periphery of the cornea and an angle of the plane of the entrance tunnel formation in relation to the plane of the ISP – 45. After the femtosecond laser operation is completed, the vacuum is released and the laser handle is removed from the cornea; the formed entrance tunnel and ISP are inspected with a spatula. Remaining collagen bridges are separated along the entire circumference of the ISP, a cohesive viscoelastic is introduced, and a supporting part of the keratoprosthesis is implanted using a microsurgical forceps; an external opening of the entrance tunnel is fixed with 4 interrupted 10.0 nylon sutures.
EFFECT: method enables forming ISP at depth of 2/3 of the corneal thickness with the specified dimensions in the vascular leukoma, which provides a stable position of the support plate of the keratoprosthesis, minimizes the risk of perforation of the deep layers of the cornea and reduces the risk of protrusion of the keratoprosthesis in the future.
1 cl, 1 ex
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