title: Laser in situ keratomileusis enhancement after photorefractive keratectomy.
abstract: OBJECTIVE
  To describe the safety, effectiveness, and predictability of laser in situ keratomileusis (LASIK) for correcting residual myopia after primary photorefractive keratectomy (PRK).
  
  
  METHODS
  A retrospective, noncomparative case series.
  
  
  METHODS
  Thirty-six consecutive eyes of 30 patients underwent LASIK after primary PRK. A Multiscan Schwind excimer laser was used for LASIK enhancement.
  
  
  METHODS
  Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity, refraction, videokeratography, and complications were determined before and after LASIK retreatment. Follow-up was at least 12 months.
  
  
  RESULTS
  Before LASIK, 11.11% of eyes showed a UCVA of 20/40 or better. This increased to 94.44% 12 months after LASIK. A UCVA of 20/25 or better was achieved in 0% before and in 72.22% after retreatment. Refraction +/-0.5 diopters (spherical equivalent) represented 0% of eyes before and 77.78% of eyes after enhancement. Before LASIK, two eyes had significant haze. Haze remained in these two eyes and appeared in another eye.
  
  
  CONCLUSIONS
  Laser in situ keratomileusis proved to be safe and effective for treating residual myopia after PRK. Care must be taken when considering LASIK retreatment in patients with significant haze after primary PRK.
authors.affiliation: Centro Oftalmológico Real Vision, Madrid, Spain. lazaroft@teleline.es
authors.forename: C
authors.initials: C
authors.lastname: Lazaro
authors.forename: A
authors.initials: A
authors.lastname: Castillo
authors.forename: J L
authors.initials: JL
authors.lastname: Hernandez-Matamoros
authors.forename: M T
authors.initials: MT
authors.lastname: Iradier
authors.forename: J
authors.initials: J
authors.lastname: Garcia-Feijoo
authors.forename: J M
authors.initials: JM
authors.lastname: Benitez-del-Castillo
authors.forename: J
authors.initials: J
authors.lastname: Perea
authors.forename: J
authors.initials: J
authors.lastname: Garcia-Sanchez
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000601:surgery*; D003315:Cornea / Q000601:surgery*; D019781:Corneal Topography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007431:Intraoperative Complications; D020731:Keratomileusis, Laser In Situ; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D018903:Photorefractive Keratectomy; D011300:Preoperative Care; D012086:Reoperation; D012189:Retrospective Studies; D012449:Safety; D016896:Treatment Outcome; D014792:Visual Acuity