Сравнительные результаты имплантации роговичного кольца MyoRing и сочетанного применения имплантации MyoRing с кросслинкингом роговицы у пациентов с кератоконусом

Abstract

Purpose : tо estimate the effectiveness of complete corneal ring (MyoRing) implantation compared with MyoRing implantation combined\xa0with corneal collagen crosslinking (CXL) for keratoconus treatment for 36 months follow-up. Patients and Methods . There\xa0were 101 patients (124 eyes) with progressing keratoconus aged 18–59 years in the study. Intracorneal rings were implanted in\xa0all patients. The patients were divided into 2 groups. MyoRing implantation was performed in a series of 59 patients (76 eyes) with\xa0keratoconus II–III Amsler classification, 42 patients (48 eyes) had MyoRing implantation combined with CXL. Implantation of a MyoRing\xa0in the corneal pocket was performed using a PocketMaker microkeratome and corneal intrastromal implantation system. Results .\xa0Keratometry was reduced in both groups; after MyoRing implantation for 8,45 D and MyoRing combined with CXL for 7,44 D, the\xa0spherical equivalent decreased for 7,72 and 6,29 D respectively, after 36 months. The cylinder decreased to 3,33 D with MyoRing\xa0alone and to 3,11 D with MyoRing combined with CXL. The smallest corneal thickness remained stable during 36 months after the\xa0procedure. There was an improvement in uncorrected and corrected visual acuity, and the difference in the CRF within the period of\xa0up to 12 months after the operation. It can be explained by the pseudochase formation in the group with a combined procedure. Conclusion .\xa0The implantation of the MyoRing IRC and the combination of MyoRing with CXL showed efficacy and safety in stabilizing keratoconus\xa0stabilization, as well as correction of comorbided ametropia 3 years after surgery. Both MyoRing implantation and MyoRing\xa0combined with CXL were effective in the stabilization of progressive keratoconus, as well as the correction of ametropia 3 years after\xa0surgery. There was no significant difference in MyoRing implantation and its combination with corneal crosslinking in visual and refractive\xa0results. The refractive power of the cornea was only one exeption. Long follow-up and randomized prospective studies with a large\xa0number of patients are needed.