Evaluation Of Long-Term Outcomes Of Simultaneous Corneal Collagen Cross-Linking And Femtosecond Laser-Assisted Intracorneal Ring Segment Implantation For Keratoconus

To evaluate the long-term outcomes (more than 5 years) of simultaneous corneal collagen cross linking and femtosecond laser-assisted intracorneal stromal ring segment implantation for management of keratoconus

We revised the data records of 50 eyes of 37 patients with keratoconus who had simultaneous CXL and ICRS implantation between January 2015 and June 2016 by a single experienced surgeon at Roayah eye center, Alexandria, and followed up for at least five years

The study is a non-comparative noncontrolled retrospective, single-center study. We revised the data records of 50 eyes of 37 patients with keratoconus who had simultaneous CXL and ICRS implantation between January 2015 and June 2016 by a single experienced surgeon and followed up for at least five years concerning visual acuity, refraction, and corneal imaging

Best Corrected Visual Acuity (BCVA) Showed statistically significant improvement with mean changed from 1.07 ± 0.41 to 0.40 ± 0.30 LogMAR. the results showed significant improvement also after 5 years. The spherical equivalent (SE) also was significantly improved from a mean of -4.61 ± 4.37 D to a mean of -1.41 ± -1.49 D. Keratometric readings also showed improvement of both K1 and K2. The mean K1 improved from a mean of 49.6 D ± 6.76 to 47.78 ± 6.17 and the mean K2 improved from 55.04 ± 7.34 to 52.67 ± 7.38. Results were stable with no statistically significant change after 5 years.

Simultaneous use of corneal collagen cross-linking and femtosecond laser-assisted intracorneal ring segment seems to be an effective and stable for both visual outcome and refraction in patients with keratoconus.