Posters

The results of the implantation of intracorneal segment Ferrara ring in the treatment of keratoconus

Poster Details

First Author: T.Manoilo UKRAINE

Co Author(s):    G. Parkhomenko                    

Abstract Details

Purpose:

to analyze the results of intracorneal segment (ICS) implantation  in patients with keratoconus.

Setting:

Medical center Noviy Zir ; , Kyiv, Ukraine

Methods:

A retrospective analysis of the ICS implantation results was performed. The study included 15 eyes. Uncorrected distance visual acuity (UCDVA) before and after implantation (3 months), the maximum refractive power of the cornea (Kmax), asphericity (Q-val) of the cornea (according to Pentakam) were analyzed.All interventions were performed  using a FS200 (Alcon) femtosecond laser to form  tunnels, and then the ICS was implanted. At the end of the operation soft contact lens was putted on the eye for 1 day. Epithelization of the side cut of the cornea took 1 day usually.

Results:

In 14 of 15 cases the operation was successful. In one case, the Descemet membrane was perforated and the segment was not implanted. Perforation occurred due to mistake of corneal thickness estimation and position of corneal tunnel too deep. After 3 months, the average increase in UCDVA was 3.6 lines (from 1 to 5 lines). The average Kmax decreased from 59 D  to 53.1 D . Corneal asphericity decreased from -1.1 to -0.56 . The average pachymetry of the cornea before the operation was 435 microns, after the operation - 451 microns. Patients noted a significant decrease in doubling images.

Conclusions:

Intracorneal segment implantation is a safe and adequate method of visual rehabilitation of patients with the 3rd stage of keratoconus. It allows increase cornea regularity, decreases Q-value and high order aberrations and increase uncorrected visual acuity.

Financial Disclosure:

None