title: [A clinical study of correlation between ablation depth and corneal subepithelial haze after photorefractive keratectomy].
abstract: OBJECTIVE
  To assess the correlation between excimer laser ablation depth and corneal subepithelial haze in correction of myopia.
  
  
  METHODS
  The results of 31 cases (62 eyes) of myopic anisometropia on whose both eyes photorefractive keratectomy (PRK) was performed at the same time were analyzed. The bilateral eyes of each patient were divided into two groups: The lower myopic eyes (-9.13 +/- 3.53 D) were in the control group and the higher myopic eyes (-14.10 +/- 4.17 D) in the treatment group. The follow-up periods were 6 to 12 months (mean, 10 months).
  
  
  RESULTS
  There is significant difference (P < 0.05) in the haze between the two groups after PRK.
  
  
  CONCLUSIONS
  The higher the correction of myopia, the more dangerous the occurrence of the haze following PRK.
authors.affiliation: Department of Ophthalmology, Chengdu Third People's Hospital.
authors.forename: X
authors.initials: X
authors.lastname: Tang
authors.forename: Z
authors.initials: Z
authors.lastname: Liao
mesh_terms: D000328:Adult; D015858:Anisometropia / Q000150:complications / Q000601:surgery*; D003315:Cornea / Q000473:pathology; D003318:Corneal Opacity / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications / Q000601:surgery*; D018903:Photorefractive Keratectomy / Q000009:adverse effects / Q000379:methods*; D011446:Prospective Studies