Efficacy Of Ahmed Valve Implantation Research Articles

Ahmed glaucoma valve implantation for refractory glaucoma

Objective To evaluate the efficacy of Ahmed valve implantation for refractory glaucoma and discuss the postoperative complications and management.Methods A retrospective study was conducted to documents of 23 eyes with refractory glaucoma from 21patients who undergone Ahmed valve implantation.The subject had a minimum 6 months of follow-up after surgery.Results The follow-up ranged from 6 to 24months (mean 20.1 ±7.2months).There was no significant change in visual acuity during follow-up.Intraocular pressure was reduced from a preoperative mean of (45.70 ± 11.44) mmHg(1 mmHg =0.133 kPa)to a postoperative mean of(26.28 ± 12.02) mmHg( P ＜ 0.01 ) . The cumulative probabilities of success at 1and 2 years were 40％ and 16.7％ and of total success at 1 and 2 years were 70％ and 50％ respectively.The postoperative complications occurred in 19eyes( 82.6％ )include 13 eyes within 1 week after surgery and 6 eyes during 6 to 24 months follow - up. Conclusion Ahmed valve implantation is effective method in the management of refractory glaucoma in spite of its unnegligible complications. Key words: Glaucoma, refractory; Ahmed valve; Surgery; Complications