title: Excimer laser photorefractive keratectomy for hyperopia.
abstract: OBJECTIVE
  To achieve less variation in the refractive outcome of hyperopic photorefractive keratectomy (PRK) by enlarging the treatment zone to 9.0 mm.
  
  
  METHODS
  Marienhospital, Amberg, Germany, and Klinika Ocni A Esteticke Chirurgie, Zlin, Czech Republic.
  
  
  METHODS
  This prospective clinical study was based on the results of PRK in 68 hyperopic eyes (62 patients) using an MEL 60 excimer laser. Mean attempted correction was +4.85 diopters (D) +/- 1.45 (SD) (range +2.00 to +8.25 D). Maximum follow-up was 12 months (68 eyes).
  
  
  RESULTS
  One year after PRK, 55 eyes (81%) were within 1.00 D and 40 eyes (59%) were within 0.50 D of the intended correction (predictability). Best corrected visual acuity was unchanged or improved in 62 eyes (92%) (safety). Four eyes (6%) lost one line, 1 eye (1%), two lines, and 1 eye (1%), three lines. Sixty-six eyes (97%) had an uncorrected visual acuity of 20/40 or better (efficacy) and 27 (40%), 20/20 or better.
  
  
  CONCLUSIONS
  Photorefractive keratectomy with a 9.0 mm treatment zone was an efficient and relatively safe procedure for correcting hyperopia of up to 8.25 D. The predictability was good. Great care must be taken to improve the centration of the optical zone.
authors.affiliation: Department of Ophthalmology, Marienhospital, Amberg, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Dausch
authors.forename: Z
authors.initials: Z
authors.lastname: Smecka
authors.forename: R
authors.initials: R
authors.lastname: Klein
authors.forename: E
authors.initials: E
authors.lastname: Schröder
authors.forename: S
authors.initials: S
authors.lastname: Kirchner
mesh_terms: D000328:Adult; D003315:Cornea / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D007091:Image Processing, Computer-Assisted; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D018903:Photorefractive Keratectomy / Q000379:methods*; D011183:Postoperative Complications; D011446:Prospective Studies; D012029:Refraction, Ocular; D014792:Visual Acuity