JUNE 2010 CATARACT & REFRACTIVE SURGERY TODAY EUROPE 23 A s we reported in the Journal of Cataract and Refractive Surgery,1 use of a thick intrastromal corneal ring segment (ICRS) may enhance the surgical effect in patients with keratoconus. Although commercially available ICRSs are limited in thickness, one can achieve the effect of thicker segments by stacking two within a single intrastromal...

PURPOSE To analyze and compare changes to the anterior and posterior corneal surfaces after Ferrara intracorneal ring segment (ICRS) (AJL, Boecillo, Spain) implantation and to correlate those changes with visual outcomes. METHODS This retrospective case series study comprised consecutive patients with keratoconus implanted with the Ferrara ICRS. Computed tomography scans of the two corneal su...

Abstract This study compares two techniques of reconstruction and representation the anterior posterior surfaces human cornea, both for healthy keratoconus eyes, in a CAD software environment using raw tomographic data, by different methods: mesh model (obtained from grid points) NURBS surface model. After reconstruction, morpho-geometric analysis was made, several parameters were defined measu...

PURPOSE. To assess the suitability of corneal anterior and posterior surface aberrations and thickness profile data for discrimination between eyes with early keratoconus (KC), fellow eyes of eyes with early KC, and normal eyes. METHODS. Thirty-two eyes (group 1) of 25 patients were newly diagnosed with KC; 17 eyes of 17 patients (group 2) were asymptomatic fellow eyes without clinical signs of...

BACKGROUND Toric intraocular lens (IOL) implantation can be an effective method for correcting corneal astigmatism in patients with vitreoretinal diseases and cataract. Our purpose is to report the outcome of toric IOL implantation in two cases - a patient with scleral-buckle-induced regular corneal astigmatism and a patient with keratoconus following pars plana vitrectomy. As far as we are awa...

PURPOSE To evaluate corneal changes after corneal cross-linking (CXL) in progressive keratoconus with Scheimpflug imaging. METHODS This prospective analysis included 40 eyes from 22 patients with progressive keratoconus. Corneal CXL was performed in 25 eyes (CXL group) and 15 fellow eyes served as controls (control group). Uncorrected (UDVA) and corrected distance visual acuity (CDVA), thinne...

BACKGROUND Keratoconus (KC) is usually a bilateral corneal ectatic disease. For significant asymmetric presentation (so called unilateral KC), the fellow eye has the mildest and earliest form of the disease, which is typically called forme fruste keratoconus. The aim of this study was to evaluate the sensitivity and specificity of parameters derived from a Scheimpflug imaging system (Pentacam) ...