title: Holmium laser thermal keratoplasty for hyperopia in eyes overcorrected with laser in situ keratomileusis for myopia.
abstract: OBJECTIVE
  To assess the efficacy and safety of holmium laser thermal keratoplasty (Ho:LTK) for hyperopia in eyes overcorrected after laser in situ keratomileusis (LASIK) for myopia.
  
  
  METHODS
  We performed a prospective evaluation of Ho:LTK in eyes with secondary hyperopia from +1.00 to +5.50 D after LASIK. Thirty-seven eyes of 23 patients received one concentric 8-spot application at the 6-mm-diameter zone. Mean patient age was 41.3 +/- 13.0 years (range 20 to 68 yr). Mean corneal thickness was 455.86 +/- 31.20 microm (range 373 to 506 microm).
  
  
  RESULTS
  Mean spherical equivalent refraction changed from +2.30 +/- 1.08 D to +0.45 +/- 1.00 D at 12 months after Ho:LTK. Thirty-one eyes (84%) were within +/- 1.00 D of emmetropia and 25 eyes (68%) were within +/- 0.50 D at 1 year. Mean change in refraction was 1.84 +/- 0.92 D. No eye lost 2 lines of best spectacle-corrected visual acuity.
  
  
  CONCLUSIONS
  Ho:LTK is a suitable alternative for correcting secondary hyperopia resulting from LASIK for myopia. Parameter adjustments may be necessary for improving the results.
authors.affiliation: Department of Ophthalmology, Istanbul Faculty of Medicine, Istanbul University, Turkey. gozum@tnn.net
authors.forename: Nilufer
authors.initials: N
authors.lastname: Gozum
authors.forename: Buket
authors.initials: B
authors.lastname: Ayoglu
authors.forename: Acun
authors.initials: A
authors.lastname: Gezer
authors.forename: Sinan
authors.initials: S
authors.lastname: Goker
authors.forename: Ahmet
authors.initials: A
authors.lastname: Gucukoglu
mesh_terms: D000328:Adult; D000368:Aged; D019781:Corneal Topography; D005260:Female; D006695:Holmium / Q000627:therapeutic use; D006801:Humans; D006956:Hyperopia / Q000209:etiology / Q000601:surgery*; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects*; D017075:Laser Coagulation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011183:Postoperative Complications; D011446:Prospective Studies; D012029:Refraction, Ocular; D012086:Reoperation; D012449:Safety; D016896:Treatment Outcome
chemical_list: D006695:Holmium