title: Corneal Collagen Cross-Linking Mushroom Shape Demarcation Line Profile After Limited Bowman's Membrane Removal by Phototherapeutic Keratectomy.
abstract: OBJECTIVE
  To report a corneal collagen cross-linking (CXL) mushroom shape demarcation line profile after limited Bowman's membrane removal by phototherapeutic keratectomy (PTK).
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A twenty-one-year-old male with progressive keratoconus underwent mechanical epithelial debridement (at an 8.5 mm zone) followed by PTK (at a 5.0 mm zone and in a 10 μm depth) and CXL. No intra- or early postoperative complications were found. Evaluation of the corneal stromal demarcation line depth using anterior segment optical coherence tomography revealed a mushroom shape profile.
  
  
  CONCLUSIONS
  It seems that removal of the Bowman's layer leads to greater depth of the corneal stromal demarcation line.
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece ; Bascom Palmer Eye Institute, Miller School of Medicine, University of Miami, Miami, FL, USA.
authors.forename: George D
authors.initials: GD
authors.lastname: Kymionis
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Grentzelos
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
authors.forename: Nektarios E
authors.initials: NE
authors.lastname: Klados
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
authors.forename: Niki A
authors.initials: NA
authors.lastname: Xanthopoulou
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
authors.forename: Theodore A
authors.initials: TA
authors.lastname: Paraskevopoulos
authors.affiliation: Vardinoyiannion Eye Institute of Crete (VEIC), Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
authors.forename: Efstathios T
authors.initials: ET
authors.lastname: Detorakis
keywords: Cross-linking; keratoconus; phototherapeutic keratectomy.