title: Hyperopic laser in situ keratomileusis in eyes with previous radial keratotomy.
abstract: OBJECTIVE
  To assess the safety and efficacy of hyperopic laser in situ keratomileusis (LASIK) in eyes with previous radial keratotomy (RK).
  
  
  METHODS
  Zale Lipshy University Hospital Laser Center for Vision, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
  
  
  METHODS
  Thirty-eight eyes of 25 patients were treated with LASIK for secondary hyperopia after RK using a Visx Star S2, S3, S4, or LADARVision excimer laser. Retreatment was done in 7 eyes. The main outcome measures were manifest refraction spherical equivalent (MRSE), uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), predictability of treatment, and complications.
  
  
  RESULTS
  Preoperative mean MRSE was +2.39 diopters (D) +/- 1.28 (SD) (range +0.87 to +6.00 D). At the last visit (25 eyes with minimum follow-up of 12 months, including retreatments), the mean follow-up was 23.3 +/- 7.3 months (range 12 to 34 months), the mean MRSE was +0.11 +/- 0.71 D, and the UCVA was 20/40 or better in 24 eyes (96%). Although no significant change in the mean MRSE was observed, the postoperative mean refractive cylinder showed a gradual increase over the follow-up period. No eye lost more than 2 lines of BSCVA.
  
  
  CONCLUSIONS
  Laser in situ keratomileusis was a safe and effective treatment with good predictability for the correction of consecutive hyperopia after RK. Cylindrical errors were difficult to correct, and astigmatic correction tended to regress over time. Retreatments are safe when old flaps were relifted.
authors.affiliation: Department of Ophthalmology, The University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390-9057, USA.
authors.forename: Deniz
authors.initials: D
authors.lastname: Oral
authors.forename: Shady T
authors.initials: ST
authors.lastname: Awwad
authors.forename: Michael S
authors.initials: MS
authors.lastname: Seward
authors.forename: R Wayne
authors.initials: RW
authors.lastname: Bowman
authors.forename: James P
authors.initials: JP
authors.lastname: McCulley
authors.forename: H Dwight
authors.initials: HD
authors.lastname: Cavanagh
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000209:etiology / Q000601:surgery*; D007431:Intraoperative Complications; D020731:Keratomileusis, Laser In Situ / Q000379:methods*; D007646:Keratotomy, Radial / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery; D011183:Postoperative Complications; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D012449:Safety; D016896:Treatment Outcome; D014792:Visual Acuity