title: Treatment of six cases of advanced ectasia after LASIK with 6-mm Intacs SK.
abstract: OBJECTIVE
  To describe the outcome after implantation of 6-mm Intacs SK implants (Addition Technology Inc) for treatment of ectasia after LASIK.
  
  
  METHODS
  Retrospective descriptive longitudinal case series. Seven eyes of 6 patients with advanced keratectasia after LASIK were treated with 6-mm Intacs SK implantation. Parameters evaluated preoperatively and at 9 months were uncorrected (UCVA) and best spectacle-corrected visual acuity (BSCVA), average keratometry (AvK), and spherical equivalent refractive error (SEQ).
  
  
  RESULTS
  Mean preoperative UCVA was 1.56 +/ - 0.43 logMAR (approximately 20/800), BSCVA was 0.57 +/ - 0.24 logMAR (approximately 20/75), SEQ was -14.67 +/- 5.30 diopters (D), and AvK was 53.80 +/ - 6.30 D. Postoperative examination showed a clinically significant improvement in UCVA, which improved to 0.27+/- 0.14 logMAR (approximately 20/40). Mean BSCVA improved to 0.24 +/- 0.08 logMAR (approximately 20/32), mean SEQ reduced to -2.93 +/- 0.86 D, and AvK reduced to 48.57 +/ - 5.00 D.
  
  
  CONCLUSIONS
  Within the scope of six cases with 9-month postoperative follow-up, implantation of 6-mm Intacs SK appears to be a safe and effective treatment option for management of advanced cases of keratectasia after LASIK.
authors.affiliation: Cornea Clinic, Centro Medico Docente La Trinidad, Caracas, Venezuela. luisalberto_rt@yahoo.com
authors.forename: Luís A
authors.initials: LA
authors.lastname: Rodríguez
authors.forename: Anny E
authors.initials: AE
authors.lastname: Villegas
authors.forename: Dianela
authors.initials: D
authors.lastname: Porras
authors.forename: María A
authors.initials: MA
authors.lastname: Benavides
authors.forename: Javier
authors.initials: J
authors.lastname: Molina
mesh_terms: D000328:Adult; D003319:Corneal Stroma / Q000601:surgery*; D019781:Corneal Topography; D004108:Dilatation, Pathologic / Q000209:etiology / Q000601:surgery; D005260:Female; D006801:Humans; D007640:Keratoconus / Q000209:etiology / Q000601:surgery*; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects*; D008297:Male; D018613:Microscopy, Confocal; D009216:Myopia / Q000601:surgery; D019904:Polymethyl Methacrylate; D019736:Prostheses and Implants; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology
chemical_list: D019904:Polymethyl Methacrylate