title: Photorefractive keratectomy for hyperopia: six months results in 45 eyes.
abstract: OBJECTIVE
  To evaluate the safety and efficacy of photorefractive and photoastigmatic keratectomy for hyperopia.
  
  
  METHODS
  The Chiron Keracor 116 excimer laser (Chiron Technolas, Munich, Germany) was used to create a peripheral annular ablation profile for the correction of hyperopia and a prior cylindrical ablation in the negative axis for correction of the astigmatic component in 45 consecutive eyes with up to +6.50 diopters (D). All patients were followed for a minimum of 6 months.
  
  
  RESULTS
  At 6 months, mean subjective refraction was +0.12 D (standard deviation, 0.70), with 87% within 1 D of emmetropia. Ninety-three percent achieved uncorrected visual acuity of 20/40 or better. Three eyes (6.7%) lost 2 lines of best spectacle-corrected visual acuity and six eyes (13.3%) gained 2 lines or more.
  
  
  CONCLUSIONS
  Photorefractive and photoastigmatic keratectomy effectively and predictably reduced hyperopia, improving uncorrected visual acuity in all patients at 6 months. Longer follow-up is required to be certain that refractive changes are stable.
authors.affiliation: Corneo Plastic Unit and Eye Bank, Queen Victoria Hospital, West Sussex, England.
authors.forename: S M
authors.initials: SM
authors.lastname: Daya
authors.forename: F R
authors.initials: FR
authors.lastname: Tappouni
authors.forename: N E
authors.initials: NE
authors.lastname: Habib
mesh_terms: D001251:Astigmatism / Q000503:physiopathology / Q000601:surgery; D003315:Cornea / Q000503:physiopathology / Q000601:surgery*; D019781:Corneal Topography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000503:physiopathology / Q000601:surgery*; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D018903:Photorefractive Keratectomy; D011183:Postoperative Complications; D012029:Refraction, Ocular / Q000502:physiology; D015203:Reproducibility of Results; D012449:Safety; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology