title: [Retreatment after PRK for low and medium myopia. Results and study of contrast sensitivity].
abstract: OBJECTIVE
  To examine the results of retreatment with eximer laser photorefractive keratectomy (PRK) on refraction, visual acuity, haze, and contrast sensitivity.
  
  
  METHODS
  Excimer laser photorefractive keratectomy was performed in 18 patients, once for one eye and twice for the other eye due to undercorrection or regression. Outcome was compared between the two eyes.
  
  
  RESULTS
  Uncorrected visual acuity was above 20/40 in 94.4% of the retreated eyes. There was no statistical difference between the two eyes for haze and contrast sensitivity.
  
  
  CONCLUSIONS
  Retreatment with laser photorefractive keratectomy is a safe procedure and should be performed when regression or undercorrection occurs after the first laser excimer treatment.
authors.affiliation: Clinique Ophtalmologique, Hôpital Jean Minjoz, Boulevard Fleming, 25000 Besançon, France.
authors.forename: M
authors.initials: M
authors.lastname: Montard
authors.forename: J L
authors.initials: JL
authors.lastname: Fau
authors.forename: J M
authors.initials: JM
authors.lastname: Perone
mesh_terms: D000328:Adult; D015350:Contrast Sensitivity; D005260:Female; D006801:Humans; D054018:Lasers, Excimer; D008297:Male; D009216:Myopia / Q000503:physiopathology* / Q000601:surgery*; D018903:Photorefractive Keratectomy; D012086:Reoperation; D014792:Visual Acuity