[New therapeutic approach of keratoconus with intracorneal ring segments aided by femtosecond laser (Tecnolas Perfect Vision): indications, operating technique and results].
OBJECTIVE
To assess the results of intracorneal ring segment implantation assisted by the Tecnolas Perfect Vision(®) femtosecond laser (Heidelberg, Germany).


METHODS
Retrospective observational study.


METHODS
The patients were operated on with the Tecnolas Perfect Vision(®) femtosecond laser. The following parameters were evaluated before and after surgery: uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), corneal topography, wavefront analysis, and central corneal thickness. The Wilcoxon test was used for statistical analysis.


RESULTS
Seventeen eyes of 15 patients were included. The mean follow-up was 6.9±0.71 months. Significant improvement of UCVA and BCVA was observed in 82.35% (P=0.027) and 94.12% (P=0.003) of the eyes, respectively. The subjective refraction showed a significant decrease of the sphere from -10.29±5.54 to -6.5±5.03D (P=0.002). The subjective cylinder significantly decreased from 5.43±3.20 to 3.69±2.30D (P=0.026). The SAI also decreased significantly (P=0.011).


CONCLUSIONS
Femtosecond-assisted intracorneal ring segment implantation is an effective treatment for corneal ectasia. Further studies are needed to improve surgical parameters and outcomes.
Service d'ophtalmologie, hôpital de la Timone, 264, rue Saint-Pierre, 13385 Marseille cedex 5, France. madjoph@hotmail.fr
J
J
Madar
H
H
Proust
F
F
Matonti
J
J
Conrath
B
B
Ridings
L
L
Hoffart
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007640:Keratoconus / Q000601:surgery*; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures / Q000379:methods; D012189:Retrospective Studies; D055815:Young Adult