Name

075 - Evaluation clinique et topographique après implantation par anneaux intracornéens asymétriques progressifs dans le kératocône

The aim of our study was to determine the effect of intracorneal asymmetric progressive ring placement, on visual and topographic outcomes in patients with keratoconus.

A prospective study was conducted on patients with keratoconus who underwent femtosecond laser-assisted intracorneal asymmetric progressive ring implantation for keratoconus. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), keratometric readings (K), central corneal thickness and thinnest corneal pachymetry (AS-OCT) have been evaluated preoperatively and one, three and six months after surgery.

Thirty five eyes of 21 consecutive patients were included in this study. There was a significant improvement of uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) after ring segment implantation from 0,29 preoperatively to 0,54 for UCVA and from 0,62 to 0,88 for BCVA at 6 months postoperatively. The average keratometric values (K value) decreased from 48,97 D preoperatively to 45,8 D postoperatively. There were no complications or need for ring repositioning.

Asymmetrical implantation and progressive thickness appear to be an interesting therapeutic option in very asymmetric keratoconus cases.

Eyes treated with intracorneal asymmetric progressive rings experienced an improvement in corneal topography, UCVA, and BCVA, one month and six months after therapy.