Long-term follow-up of intrastromal corneal ring segments in keratoconus
- 1 October 2009
- journal article
- Published by Ovid Technologies (Wolters Kluwer Health) in Journal of Cataract & Refractive Surgery
- Vol. 35 (10), 1768-1773
- https://doi.org/10.1016/j.jcrs.2009.05.036
Abstract
To report the long-term follow-up of Ferrara intrastromal corneal ring segment (ICRS) implantation for the management of keratoconus. Private clinic, Belo Horizonte, Brazil. This study comprised patients with keratoconus who completed at least 5 years of follow-up. One or 2 ICRS were inserted in the cornea, embracing the keratoconus area. Statistical analysis included preoperative and postoperative uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and keratometry (K) values. Thirty-five eyes of 28 patients were evaluated. The mean UDVA improved from 0.15 preoperatively to 0.31 postoperatively and the mean CDVA, from 0.41 to 0.62, respectively; the increases were statistically significant (P = .003 and P = .002, respectively). Corneal topography showed corneal flattening in all eyes. The mean minimum K value decreased from 48.99 D preoperatively to 44.45 D postoperatively and the mean maximum K value, from 54.07 D to 48.09 D, respectively; the decreases were statistically significant (both P = .000). Five years after ICRS implantation, the UDVA and CDVA were improved in eyes with keratoconus. There was significant postoperative corneal flattening that remained stable over the follow-up period.Keywords
This publication has 19 references indexed in Scilit:
- Topical Bevacizumab in the Treatment of Corneal NeovascularizationAmerican Journal of Ophthalmology, 2009
- Bevacizumab (Avastin) for Corneal Neovascularization-Corneal Light Shield Soaked ApplicationCornea, 2009
- Subconjunctival Bevacizumab for Corneal NeovascularizationCornea, 2008
- Long-term Follow-up of Intacs in KeratoconusAmerican Journal of Ophthalmology, 2007
- Intacs for the correction of keratoconus: Two-year follow-upJournal of Cataract & Refractive Surgery, 2007
- Intracorneal ring segments for keratoconus correction: Long-term follow-upJournal of Cataract & Refractive Surgery, 2006
- Ferrara intracorneal ring segments for keratoconusJournal of Cataract & Refractive Surgery, 2004
- Correction of astigmatism with short arc- length intrastromal corneal ring segments: Preliminary resultsOphthalmology, 2003
- Long-term follow-up of Intacs from a single centerJournal of Cataract & Refractive Surgery, 2001
- INTACS inserts for treating keratoconus: One-year resultsOphthalmology, 2001