Clinical outcomes after intrastromal corneal ring segments reoperation in keratoconus patients

• Main Authors: Leonardo Torquetti, Guilherme Ferrara, Franklin Almeida, Leandro Cunha, Paulo Ferrara, Jesús Merayo-Lloves
• Format: Article
• Language: English
• Published: Press of International Journal of Ophthalmology (IJO PRESS) 2013-12-01
• Series: International Journal of Ophthalmology
• Subjects: intrastromal corneal ring segments; keratoconus; reoperation
• Online Access: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3874518/
• ISSN: 2222-3959; 2227-4898

<b>AIM</b>:To evaluate the clinical outcomes after Ferrara intrastromal corneal ring segments (ICRS) reoperation in patients with keratoconus.<b>RESULTS:</b> The mean follow-up time after the reoperation was 30.5±9.7 months. The mean UCVA improved from 20/300 to 20/80 (<i>P</i>=0.005); the mean BCVA improved from 20/160 to 20/50 (<i>P</i>=0.0002), the mean keratometry reduced from 49.33±4.19D to 46.16±3.90D (<i>P</i>=0.0001), the mean pachymetry at the thinnest point increased from 450±42.9mm to 469±40.8mm (<i>P</i>=0.0001). The asphericity increased from -0.84±0.74 to -0.35±0.81 (<i>P</i>=0.15) and the spherical equivalent reduced from -4.64±4.87D to -3.04±3.45D (<i>P</i>=0.137). The changes in the asphericity and spherical equivalent were not statistically significant.<b>CONCLUSION:</b> Ferrara ICRS implantation showed to be a reversible and readjustable surgical procedure for keratoconus treatment. Good outcomes can be obtained even after removal, addition, reposition or exchange of ICRS.