title: Surgical Outcome of Ahmed Valve Implantation in Mexican Patients with Neovascular Glaucoma.
abstract: OBJECTIVE
  To describe clinical results of Ahmed glaucoma valve implantation in Mexican patients with neovascular glaucoma (NVG).
  
  
  METHODS
  We reviewed records of 60 eyes of 60 patients with NVG who underwent Ahmed valve implantation, with a follow-up period of 1 year. We identified successful and failed cases and compared baseline and follow-up characteristics to identify possible differences between both groups.
  
  
  RESULTS
  We classified 36 eyes (60%) as successful and 24 (40%) as failed cases. We found a significant difference in success rate in patients who had a hypertensive phase at any time during the follow-up period (OR = 5.15, CI = 1.49-20.15, p = 0.004). Patients in the success group showed a statistically significant decrease in the number of glaucoma medications 1 year after surgery (p <0.0001). We found a statistically significant difference in success rate in patients who had preoperative best corrected visual acuity (BCVA) better than logmar 0.70 (odds ratio 4.31, CI = 1.1-19.3, p = 0.03086).
  
  
  CONCLUSIONS
  A hypertensive postoperative phase and a preoperative BCVA worse or equal to 20/100 seem to be risk factors for Ahmed valve surgical failure in patients with NVG. How to cite this article: Hernandez-Oteyza A, Lazcano-Gomez G, Jimenez-Roman J, Hernandez-Garciadiego C. Surgical Outcome of Ahmed Valve Implantation in Mexican Patients with Neovascular Glaucoma. J Curr Glaucoma Pract 2014;8(3):86-90.
authors.affiliation: Fellow, Department of Glaucoma, Association to Prevent Blindness in Mexico, Mexico.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Hernandez-Oteyza
authors.affiliation: Professor, Department of Glaucoma, Association to Prevent Blindness in Mexico, Mexico.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Lazcano-Gomez
authors.affiliation: Head, Department of Glaucoma, Association to Prevent Blindness in Mexico, Mexico.
authors.forename: Jesus
authors.initials: J
authors.lastname: Jimenez-Roman
authors.affiliation: Professor, Institute of Mathematics at National Autonomous, University of Mexico, Mexico.
authors.forename: Carlos
authors.initials: C
authors.lastname: Hernandez-Garciadiego
keywords: Ahmed valve implantation; Glaucoma filtration surgery.; Neovascular glaucoma; Surgical outcome