title: Anterior segment optical coherence tomography for transepithelial phototherapeutic keratectomy in central corneal stromal scarring.
abstract: OBJECTIVE
  To demonstrate the use of anterior segment optical coherence tomography (ASOCT) in planning phototherapeutic keratectomy (PTK) removal of central corneal stromal scarring.
  
  
  METHODS
  A 62-year-old male presented with central corneal scars associated with significant ocular surface disease. Videokeratographies obtained using 3 different systems were not reliable. ASOCT, however, provided consistent pachymetry in the presence of noncalcific stromal opacity, which extended below Bowman membrane. PTK was performed with a transepithelial ablation, mitomycin C (MMC), and a slightly myopic photorefractive keratectomy.
  
  
  RESULTS
  Slit-lamp examination and postoperative ASOCT revealed an optically clear cornea with no evidence of stromal haze at any time point.
  
  
  CONCLUSIONS
  Transepithelial PTK guided by ASOCT can allow for the precise and accurate removal of central corneal stromal opacities, resulting in a favorable refractive outcome.
authors: Department of Ophthalmology and Visual Sciences, Faculty of Science, University of Toronto, Ontario, Canada. joseph.ma@utoronto.ca
authors: Joseph J K
authors: JJ
authors: Ma
authors: Santos S
authors: SS
authors: Tseng
authors: Blake A
authors: BA
authors: Yarascavitch
mesh_terms: D000869:Anterior Eye Segment / Q000473:pathology*; D002921:Cicatrix / Q000601:surgery*; D003316:Corneal Diseases / Q000601:surgery*; D003318:Corneal Opacity / Q000175:diagnosis / Q000601:surgery; D003319:Corneal Stroma / Q000601:surgery*; D019573:Epithelium, Corneal / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016685:Mitomycin / Q000627:therapeutic use; D019384:Nucleic Acid Synthesis Inhibitors / Q000627:therapeutic use; D018903:Photorefractive Keratectomy; D025321:Surgery, Computer-Assisted; D041623:Tomography, Optical Coherence
chemical_list: D019384:Nucleic Acid Synthesis Inhibitors; D016685:Mitomycin