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Long-term outcomes of Ahmed tube implantation in pediatric glaucoma after multiple surgeries

Christiane Al-Haddad1, Khalil Al-Salem2, Karine Ismail3

  • 1Department of Ophthalmology, American University of Beirut Medical Center, Cairo Street, PO Box: 110236, Beirut, Lebanon. ca12@aub.edu.lb.

International Ophthalmology
|October 24, 2017
PubMed

Insights

Ahmed glaucoma valve (AGV) implantation is successful in pediatric glaucoma patients with prior subconjunctival scarring. This tube shunt surgery effectively lowers intraocular pressure and reduces medication needs, even in complex cases.

Area of Science:

  • Ophthalmology
  • Glaucoma Surgery
  • Pediatric Ophthalmology

Background:

  • Pediatric glaucoma often requires multiple surgical interventions.
  • Subconjunctival scarring from previous surgeries can complicate subsequent glaucoma procedures.
  • Ahmed glaucoma valve (AGV) implantation is a potential option for refractory cases.

Purpose of the Study:

  • To evaluate the efficacy and safety of Ahmed glaucoma valve (AGV) implantation in pediatric glaucoma patients with pre-existing subconjunctival scarring.
  • To determine if prior subconjunctival scarring impacts the success rate of AGV implantation.

Main Methods:

  • Retrospective review of pediatric glaucoma cases undergoing AGV implantation after at least two prior surgeries with conjunctival scarring.
  • Analysis of preoperative and postoperative intraocular pressure (IOP), medication usage, and complications.
  • Success defined as IOP < 22 mmHg without serious complications.

Main Results:

  • Eleven eyes of 10 pediatric patients were analyzed (mean age 12.7 years).
  • Mean preoperative IOP of 24.8 mmHg decreased significantly to 17.5 mmHg postoperatively (p=0.01).
  • Mean anti-glaucoma medication use decreased from 2.8 to 1.4 (p=0.02), with an 82% success rate at 51.6 months follow-up.

Conclusions:

  • Ahmed glaucoma valve (AGV) implantation is a successful surgical option for pediatric glaucoma with subconjunctival scarring.
  • Subconjunctival scarring does not appear to increase the risk of failure for tube shunt surgery in this population.
  • AGV implantation offers significant IOP reduction and decreased medication dependence in complex pediatric glaucoma cases.
Abstract

Keywords:
Ahmed tube shuntConjunctival scarringGlaucoma surgeryPediatric glaucoma

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