Long-term outcomes of intrastromal corneal ring segment implantation for post-LASIK ectasia

Cont Lens Anterior Eye. 2014 Dec;37(6):469-72. doi: 10.1016/j.clae.2014.07.010. Epub 2014 Aug 14.

Abstract

Purpose: To report the long-term results of intrastromal corneal ring segments (ICRS) for postoperative LASIK ectasia.

Method: In this retrospective interventional cases series, 8 eyes of 6 patients who underwent femtosecond laser-assisted ICRS implantation for post-LASIK ectasia were enrolled. Main outcome measures were uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), spherical equivalent refraction, and average keratometry (Kavg) values were assessed.

Results: Mean±SD follow-up was 67±21 months (range, 36-96 months). The mean UDVA, CDVA, spherical equivalent refraction, and Kavg values were significantly improved at all postoperative visits when compared to baseline values. No serious complications were observed during follow-up.

Conclusion: Our long-term findings showed that ICRS yielded improvements in visual acuity, refractive status, and keratometric values without any progression in cases with post-LASIK corneal ectasia.

Keywords: Corneal ectasia; Intrastromal corneal ring segments; LASIK.

MeSH terms

  • Adult
  • Cornea / pathology*
  • Cornea / surgery*
  • Dilatation, Pathologic / diagnosis
  • Dilatation, Pathologic / etiology
  • Dilatation, Pathologic / surgery
  • Equipment Failure Analysis
  • Female
  • Humans
  • Keratoconus / diagnosis
  • Keratoconus / etiology*
  • Keratoconus / therapy*
  • Keratomileusis, Laser In Situ / adverse effects*
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Prostheses and Implants*
  • Prosthesis Design
  • Retrospective Studies
  • Treatment Outcome