INTRASTROMAL KERATOPLASTY FOR KERATOCONUS Russian patent published in 2022 - IPC A61F9/07 A61F9/08 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to ophthalmology. The corneal tissue is implanted into the intrastromal pocket of the recipient, formed using a femtosecond laser, followed by transepithelial crosslinking. Corneal tissue represented by a donor corneal graft with a diameter of 5.0 to 9.0 mm, including Bowman's membrane and stroma with a calculated thickness as the sum of the required stromal thickness for complete correction of ametropia during excimer laser ablation in a patient with keratoconus and an additional thickness of 50 to 250 µm to achieve the required minimum corneal thickness of at least 475 mcm for the recipient. It is implanted in the recipient's corneal pocket, formed using a femtosecond laser at a depth of 90 to 180 µm, with a diameter of 6.0 to 10.0 mm, with the Bowman's membrane located towards the endothelium, and is centered relative to the patient's visual axis, marked before the operation.

EFFECT: method allows to stabilize keratoconus by increasing the thickness of the cornea and enhancing its biomechanical properties, as well as to increase visual acuity due to the correction of existing ametropia.

1 cl, 2 ex