Femtosecond Laser-Assisted Corneal Allogeneic Intrastromal Ring Segments For Keratoconus: 1-Year Results

Published 2025 - 43rd Congress of the ESCRS

Reference: FP15.01 | Type: Free paper | DOI: 10.82333/nbc6-qw29

Authors: Carlos H. Gordillo* ¹

¹CORNEA,ZALDIVAR,MENDOZA,Argentina

Purpose

To assess the visual, refractive, topographic and aberrometric results of patients with keratoconus treated with corneal allogenic intrastromal ring segments cut with femtosecond laser (femto-CAIRS).

Setting

Patients with keratoconus treated with Femto-CAIRS at the Rothschild Foundation Hospital in Paris were included between September 2022 and July 2024.

Methods

In this prospective study, visual, refractive, topographic, and aberrometric data were by measured at baseline and 3, 6 and 12 months postoperatively.

Results

107 eyes from 89 patients were included. Best corrected visual acuity (CDVA) improved significantly from 0.36±0.24 logMAR preoperatively to 0.24 ±0.24 logMAR; 0.16±0.17 logMAR and 0.16±0.18logMAR at 3,6 and 12months after surgery, respectively.The manifest refraction spherical equivalent improved from -6.44±5.33 diopters(D) preoperatively to -2.23±3.47D (p<0.05) and -1.63±3.25D (p<0.05) at 3 and 12months postoperatively, respectively. The refractive cylinder decreased from 4.59±2.39 D preoperatively to 3.98±2.43D (p < 0.05) at 12months after the procedure. The maximum anterior keratometry and vertical coma decreased significantly from 57.6 ±6.78 D and 2.09±1.06 µm to 55.52±6.60D and 1.35±1.27 µm at 12months postoperatively, respectively.

Conclusions

Treatment with femto-CAIRS procedure improves visual, refractive, topographic, and aberrometric parameters for patients with advanced keratoconus. This procedure is safe and allows postoperative adjustements or exchanges to improve visual quality.