title: [Management of corneal endothelial decompensation with Descemet's membrane endothelial keratoplasty in a patient with Ahmed glaucoma valve implant].
abstract: BACKGROUND
  Currently, the main causes for developing bullous keratopathy are from problems related to intraocular surgery, trauma, infection, Fuchs' endothelial dystrophy and chronically elevated intraocular pressure. In the 1990s penetrating keratoplasty was once considered the therapy of choice for treatment of bullous keratopathy but in recent years it has been replaced by posterior lamellar keratoplasty. The Descemet membrane endothelial keratoplasty (DMEK) procedure represents the final development of posterior lamellar keratoplasty. The question now arises whether DMEK can be used in patients with bullous keratopathy and Ahmed glaucoma valve implant.
  
  
  METHODS
  A 72-year-old man was referred to our hospital for further evaluation with the diagnosis of bullous keratopathy and pseudoexfoliative glaucoma. The bullous keratopathy was caused by a variety of previous operations as well as decompensation of intraocular pressure. This article describes the therapy of bullous keratopathy by DMEK with existing Ahmed glaucoma valve implant. After surgery the cornea became clear and the best-corrected visual acuity improved from hand movement to 0.2. The intraocular pressure remained normal (10-14 mmHg) without antiglaucoma medication and the endothelial cell count decreased only slightly over a follow-up of 13 months. No complications were encountered.
  
  
  CONCLUSIONS
  The DMEK surgical procedure seems to be possible in patients with Ahmed glaucoma valve implant and endothelial decompensation. However, further studies with a larger number of patients should follow to validate the replacement of penetrating keratoplasty and other posterior lamellar procedures by DMEK.
authors.affiliation: Department für Augenheilkunde, Eberhard-Karls-Universität Tübingen, Schleichstr. 12, 72076, Tübingen, Deutschland.
authors.forename: T
authors.initials: T
authors.lastname: Röck
authors.forename: K-U
authors.initials: KU
authors.lastname: Bartz-Schmidt
authors.forename: D
authors.initials: D
authors.lastname: Röck
authors.forename: E
authors.initials: E
authors.lastname: Yoeruek
mesh_terms: D000368:Aged; D055954:Corneal Endothelial Cell Loss / Q000209:etiology* / Q000473:pathology / Q000601:surgery*; D057111:Descemet Stripping Endothelial Keratoplasty / Q000379:methods*; D005901:Glaucoma / Q000150:complications / Q000601:surgery*; D020327:Glaucoma Drainage Implants / Q000009:adverse effects*; D006801:Humans; D008297:Male; D016896:Treatment Outcome