title: [Phototherapeutic keratectomy combined with photorefractive keratectomy for the treatment of myopia with corneal scars].
abstract: OBJECTIVE
  To evaluate the effects of phototherapeutic keratectomy (PTK) combined with photorefractive keratectomy (PRK) in the treatment of myopia with corneal scars.
  
  
  METHODS
  Corneal epithelium was removed with laser plus scraping (d=7.0 mm). Corneal scars were removed with PTK (d=7.0 mm) and followed by PRK for myopia (d=6.0 mm). Healon was used to make corneal surface smoother during operation.
  
  
  RESULTS
  79 eyes of 54 cases of myopia with corneal scars were followed up at least for one year. Mean refractive degree was (-6.73 +/- 4.17) D and corrected vision was 0.63 before operation. After operation,corneal scars in 50 eyes (63.3%) were removed in operative zone and corneal haze was less than I degree. The vision acuity in 69 eyes (89.9%) was equal to or better than preoperative best correction. Mean postoperative vision was 0.74. Corneal surface was smoother and astigmatism was reduced after surgery.
  
  
  CONCLUSIONS
  PTK combined with PRK is a safe and effective treatment for myopia with corneal scars.
authors.affiliation: Department of Ophthalmology, Union Hospital Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. mingchangzhang@hotmail.com.
authors.forename: Ming-chang
authors.initials: MC
authors.lastname: Zhang
authors.forename: Cai-keng
authors.initials: CK
authors.lastname: Mai
authors.forename: Yan-hua
authors.initials: YH
authors.lastname: Hu
authors.forename: Shao-song
authors.initials: SS
authors.lastname: Nie
mesh_terms: D000293:Adolescent; D000328:Adult; D003318:Corneal Opacity / Q000150:complications / Q000601:surgery*; 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 / Q000379:methods*