title: Clinical experience with the double-plate Ahmed glaucoma valve.
abstract: OBJECTIVE
  To evaluate the clinical efficacy and safety of the double-plate Ahmed Glaucoma Valve.
  
  
  METHODS
  Multicenter, retrospective observational case series.
  
  
  METHODS
  We reviewed 50 eyes in 50 patients treated with the double-plate Ahmed Glaucoma Valve with mean follow-up of 11.7+/-7.9 months.
  
  
  RESULTS
  Average intraocular pressure was reduced from 36.0+/-12.4 mm Hg before surgery to 15.8+/-7.7 mm Hg at the most recent follow-up after surgery (P<.001). The number of glaucoma medications was decreased from 3.3+/-0.8 before surgery to 1.4+/-1.4 after surgery (P<.001). The percent of success was 76% of eyes at the latest follow-up. Choroidal effusion occurred in four eyes (8%) and did not require surgical treatment in any eye.
  
  
  CONCLUSIONS
  Despite a poor prognosis group of patients in this study, the double-plate Ahmed Glaucoma Valve was effective in lowering intraocular pressure with a low incidence of complications associated with hypotony.
authors.affiliation: Hamilton Eye Institute, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA.
authors.forename: Lama A
authors.initials: LA
authors.lastname: Al-Aswad
authors.forename: Peter A
authors.initials: PA
authors.lastname: Netland
authors.forename: A Robert
authors.initials: AR
authors.lastname: Bellows
authors.forename: Taly
authors.initials: T
authors.lastname: Ajdelsztajn
authors.forename: Resham A
authors.initials: RA
authors.lastname: Wadhwani
authors.forename: Ghada
authors.initials: G
authors.lastname: Ataher
authors.forename: Richard A
authors.initials: RA
authors.lastname: Hill
mesh_terms: D020327:Glaucoma Drainage Implants; D015355:Glaucoma, Neovascular / Q000503:physiopathology / Q000601:surgery*; D005902:Glaucoma, Open-Angle / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D011183:Postoperative Complications; D011474:Prosthesis Design; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D016896:Treatment Outcome