… Patients were referred for Ferrara intrastromal ring segments when they could no longer …
Severe keratoconus was defined (for the purpose of this study) as a condition that included …

… Ferrara intrastromal corneal ring segments (ICRS) in keratoconus patients. … ring segments
(eg, 150/200 denotes that the superior ring segment is 0.150 mm and the inferior ring segment …

… segment placement in moderate to severe keratoconus is safe and effective. Intacs segments
… We believe that in moderate to severe keratoconus, irregular corneal steepening results in …

… Thus, we evaluated its efficacy and safety in eyes with moderate to severe keratoconus. …
who have severe keratoconus. For example, Kanellopoulos et al. report ring extrusion and …

… Authors of this work specifically used a different thickness on the segment depending on
the severity of the disease. They observed that the best results were obtained when implanting …

… These corneal changes result in a mild to severe decrease in the … Intrastromal corneal ring
segments (ICRSs) were first … as a surgical option for keratoconus correction to delay or avoid …

… corneal ring segment (ICRS) implantation for the treatment of keratoconus considering a new
… that reported a significant improvement in patients who suffered from severe keratoconus. …

… We report herein the outcomes of ICRS in the surgical correction of different levels of
severity of keratoconus obtained in a large multicenter series of cases analyzed based on a …

… keratoconic eyes. In the long term, corneal biomechanical changes limit the prediction of the
ring segment … rate of severity or progression of keratoconus in 1 eye of some bilateral cases. …

… The use of intrastromal corneal ring segments (ICRS) in keratoconus is an effective … for
severe keratoconus) (Additional Technology, Inc.) are poly(methyl methacrylate) short-segment …