Aim: To report complications and 2-year valve survival following Ahmed valve implantation during the first 2 years of life.
Methods: Retrospective institutional case series.
Results: Forty-two eyes of 36 patients with Ahmed valve implantation (without prior drainage device surgery) during the first 2 years of life and 2-years’ post-surgical follow-up were identified. Most eyes had primary congenital glaucoma (28/42, 66.7%), aphakic glaucoma (5/42, 11.9%), or Peters anomaly (5/42, 11.9%). All but 3 eyes had prior ocular surgery. Surgery was at a mean age of 11.83 months (m) [standard deviation (SD) 5.63]. The most common significant post-operative complications were tube malpositioning requiring intervention (11/42, 26.2%), endophthalmitis (3/42, 7.1%; one with tube exposure), and retinal detachment (3/42, 7.1%). Thirty-six eyes (85.8%) required resumption of anti-glaucoma medications to maintain intraocular pressure (IOP) <= 22 mm Hg a mean 7.2 m (SD 6.8) post-operatively. Cumulative probabilities of valve survival (IOP<= 22 mm Hg with or without medication) by Kaplan-Meier analysis were 73.8% and 63.3% at 12 months and 24 months, respectively.
Conclusions: Post-operative tube malpositioning that required surgical revision was common in this age group. Infectious endophthalmitis and retinal detachment are known potential complications following any incisional surgery for advanced buphthalmos; however, tube exposure is a unique potential problem following aqueous shunt implantation that can lead to intraocular infection. Cumulative valve survival 2 years following implantation was 63.3%.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.