Journal of Current Glaucoma Practice

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VOLUME 8 , ISSUE 3 ( September-December, 2014 ) > List of Articles

Original Article

Surgical Outcome of Ahmed Valve Implantation in Mexican Patients with Neovascular Glaucoma

Alejandra Hernandez-Oteyza, Gabriel Lazcano-Gómez, Jesus Jimenez-Roman, Carlos Hernandez-Garciadiego

Keywords : Neovascular glaucoma, Surgical outcome, Ahmed valve implantation, Glaucoma filtration surgery

Citation Information : Hernandez-Oteyza A, Lazcano-Gómez 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.

DOI: 10.5005/jp-journals-10008-1168

License: CC BY-NC 4.0

Published Online: 01-06-2019

Copyright Statement:  Copyright © 2014; The Author(s).


Purpose: To describe clinical results of Ahmed glaucoma valve implantation in Mexican patients with neovascular glaucoma (NVG). Materials and 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). Conclusion: 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.

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  1. Lin S. Endoscopic cyclophotocoagulation. Br J Ophthalmol 2002 Dec;86(12):1434-1438.
  2. Ayyala RS, Pieroth L, Vinals AF, Goldstein MH, Schuman JS, Netland PA, Dreyer EB, Cooper ML, Mattox C, Frangie JP, et al. Comparison of mitomycin C trabeculectomy, glaucoma drainage device implantation, and laser neodymium: YAG cyclophotocoagulation in the management of intractable glaucoma after penetrating keratoplasty. Ophthalmology 1998 Aug;105(8):1550-1556.
  3. Krupin T, Kaufman P, Mandell AI, Terry SA, Ritch R, Podos SM, Becker B. Long-term results of valve implants in iterating surgery for eyes with neovascular glaucoma. Am J Ophthalmol 1983 Jun;95(6):775-782.
  4. Sidoti PA, Dunphy TR, Baerveldt G, LaBree L, Minckler DS, Lee PP, Heuer DK. Experience with the Baerveldt glaucoma implant in treating neovascular glaucoma. Ophthalmology 1995 Jul;102(7):1107-1118.
  5. Topouzis F, Coleman AL, Choplin N, Bethlem MM, Hill R, Yu F, Panek WC, Wilson MR. Follow-up of the original cohort with the Ahmed glaucoma valve implant. Am J Ophthalmol 1999 Aug;128(2):198-204.
  6. Costa VP, Azuara-Blanco A, Netland PA, Lesk MR, Arcieri ES. Efficacy and safety of adjunctive mitomycin C during Ahmed glaucoma valve implantation: a prospective randomized clinical trial. Ophthalmology 2004 Jun;111(6):1071-1076.
  7. Huang MC, Netland PA, Coleman AL, Siegner SW, Moster MR, Hill RA. Intermediate-term clinical experience with the Ahmed glaucoma valve implant. Am J Ophthalmol 1999 Jan;127(1):27-33.
  8. Molteno AC, Van Rooyen MM, Bartholomew RS. Implants for draining neovascular glaucoma. Br J Ophthalmol 1977 Feb;61(2):120-125.
  9. Mastropasqua L, Carpineto P, Ciancaglini M, Zuppardi E. Long-term results of Krupin-Denver valve implants in filtering surgery for neovascular glaucoma. Ophthalmologica 1996;210(4):203-206.
  10. WuDunn D, Phan AD, Cantor LB, Lind JT, Cortes A, Wu B. Clinical experience with the Baerveldt 250 mm2 Glaucoma implant. Ophthalmology 2006 May;113(5):766-772.
  11. Team RC. A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria 2013. Available at:
  12. Netland PA, Ishida K, Boyle JW. The Ahmed glaucoma valve in patients with and without neovascular glaucoma. J Glaucoma 2010 Dec;19(9):581-586.
  13. Ma TK, Yang JY, Kim JH, Kim NR, Hong S, Lee ES, Seong GJ, Kim CY. Surgical results of Ahmed valve implantation with intraoperative bevacizumab injection in patients with neovascular glaucoma. J Glaucoma 2012 Jun-Jul;21(5):331-336.
  14. Park UC, Park KH, Kim DM, Yu HG. Ahmed glaucoma valve implantationfor neovascular glaucoma after vitrectomy for proliferative diabetic retinopathy. J Glaucoma 2011 Sep;20(7):433-438.
  15. Faghihi H, Hajizadeh F, Mohammadi SF, Kadkhoda A, Peyman GA, Riazi-Esfahani M. Pars plana Ahmed valve implant and vitrectomy in the management of neovascular glaucoma. Ophthalmic Surg Lasers Imaging 2007 Jul- Aug;38(4):292-300.
  16. Shen CC, Salim S, Du H, Netland PA. Trabeculectomy versus Ahmed glaucoma valve implantation in neovascular glaucoma. Clin Ophthalmol 2011;5:281-286.
  17. Sevim MS, Buttanri IB, Kugu S, Serin D, Sevim S. Effect of intravitreal bevacizumab injection before Ahmed glaucoma valve implantation in neovascular glaucoma. Ophthalmologica 2013;229(2):94-100.
  18. Mahdy RA, Nada WM, Fawzy KM, Alnashar HY, Almosalamy SM. Efficacy of intravitreal bevacizumab with panretinal photocoagulation followed by Ahmed valve implantation in neovascular glaucoma. J Glaucoma 2013 Dec;22(9): 768-772.
  19. Jeong HS, Nam DH, Paik HJ, Lee DY. Pars plana Ahmed implantation combined with 23-gauge vitrectomy for refractory neovascular glaucoma in diabetic retinopathy. Korean J Ophthalmol 2012 Apr;26(2):92-96.
  20. Zhou MW, Wang W, Huang WB, Chen SD, Li XY, Gao XB, Zhang XL. Adjuntive with versus without intravitreal bevacizumab injection before Ahmed glaucoma valve implantation in the treatment of neovascular glaucoma. Chin Med J 2013;126(8):1412-1417.
  21. Teixeira SH, Doi LM, Freitas Silva AL, Silva KD, Paes ÂT, Higa FS, Mendonça M, Prata JA, Paranhos A. Silicone Ahmed glaucomavalve with and without intravitreal triamcinolone acetonide for neovascular glaucoma: randomized clinical trial. J Glaucoma 2012 Jun-Jul;21(5):342-348.
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