title: Ahmed tube exposure secondary to prokera implantation.
abstract: OBJECTIVE
  To report a case of Ahmed tube exposure secondary to Prokera implantation.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  We present a 48-year-old woman who developed tube erosion after penetrating keratoplasty and Prokera implantation for dense vascularized corneal scar. The patient subsequently underwent wound revision with repeat scleral patch graft and closure of the conjunctival defect.
  
  
  CONCLUSIONS
  The case presented demonstrates that caution should be exercised in using this implant in patients who have irregular elevations of the ocular surface because of glaucoma drainage devices.
authors.affiliation: Department of Ophthalmology, University of Texas Southwestern Medical Center at Dallas, Texas 75390, USA. PPRASH@parknet.pmh.org
authors.forename: Pawan
authors.initials: P
authors.lastname: Prasher
authors.forename: James D
authors.initials: JD
authors.lastname: Lehmann
authors.forename: Nalini K
authors.initials: NK
authors.lastname: Aggarwal
mesh_terms: D002387:Cataract Extraction; D005129:Eye Foreign Bodies / Q000209:etiology* / Q000601:surgery; D005260:Female; D005548:Foreign-Body Migration / Q000209:etiology* / Q000601:surgery; D020327:Glaucoma Drainage Implants; D006801:Humans; D015948:Keratoplasty, Penetrating; D019654:Lens Implantation, Intraocular; D008875:Middle Aged; D019919:Prosthesis Implantation / Q000009:adverse effects*; D012086:Reoperation