Pars Plana Insertion of Ahmed Glaucoma Valve

2005 ◽  
pp. 104-113
Keyword(s):  
Ahmed Glaucoma Valve ◽  
Pars Plana

Cauterized suture for complete tube occlusion of Ahmed glaucoma valve in hypotony maculopathy

2019 ◽  
Vol 30 (1) ◽  
pp. 221-223 ◽  
Author(s):  
María Isabel Canut ◽  
Maddi Alonso-Agesta ◽  
Jessica Botella ◽  
Gemma Julio
Keyword(s):  
Minimally Invasive ◽  
Pars Plana Vitrectomy ◽  
Ahmed Glaucoma Valve ◽  
Effective Technique ◽  
Medical Treatments ◽  
Hypotony Maculopathy ◽  
History Of ◽  
Pars Plana ◽  
Male Patients ◽  
Ab Interno

Purpose: To present our experience treating hypotony maculopathy with a simple, minimally invasive, and removable ab interno tube Ahmed glaucoma valve occlusion. Methods: Under topical anesthesia a 5–0 polypropylene suture (Prolene; Ethicon) was inserted into the Ahmed glaucoma valve tube. The length of the tube was measured, and an external suture cauterization was performed to allow an easier and safer fixation in the tube. The suture was introduced into the tube itself with the viscoelastic 27-gauge cannula. Results: This technique was performed in three cases of hypotony maculopathy with a complex history of medical treatments: a 4-year-old boy with Donnai-Barrow syndrome and previous pars plana vitrectomy that developed hypotony maculopathy the day after Ahmed glaucoma valve insertion and two male patients (69 and 49 years old) that underwent hypotony maculopathy after cyclophotocoagulation as a last option to reduce intraocular pressure. One of the men had three filtering surgeries, two 5-fluorouracil needlings and Ahmed glaucoma valve insertion. The other male patient had keratoplasty and posterior Ahmed glaucoma valve insertion. In the three cases, both hypotony and maculopathy were reversed within a week and a month, respectively, after Ahmed glaucoma valve occlusion with no complications. When hypotony maculopathy develops it seems suitable to occlude completely the Ahmed glaucoma valve tube to swiftly reverse clinical and anatomic changes. Conclusion: Intraluminal Ahmed glaucoma valve occlusion with cauterized suture is a simple, quick, reversible, and effective technique that may offer a minimally invasive way to resolve hypotony maculopathy in complex cases and avoid severe loss of vision.

scholarly journals Ahmed Glaucoma Valve Implantation in Vitrectomized Eyes

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Nimet Yeşim Erçalık ◽  
Serhat İmamoğlu
Keyword(s):  
Postoperative Complications ◽  
Final Visit ◽  
Light Perception ◽  
Ahmed Glaucoma Valve ◽  
Surgical Interventions ◽  
Surgical Success ◽  
Intraocular Hemorrhage ◽  
Pars Plana ◽  
The Mean ◽  
Valve Implantation

Purpose. To evaluate the outcomes of Ahmed glaucoma valve (AGV) implantation in vitrectomized eyes. Materials and Methods. The medical records of 13 eyes that developed glaucoma due to emulsified silicon oil or neovascularization following pars plana vitrectomy and underwent AGV implantation were retrospectively reviewed. The main outcome measures were intraocular pressure (IOP), best-corrected visual acuity (BCVA), number of antiglaucoma medications, and postoperative complications. Surgical success was defined as last IOP ≤21 mmHg or ≥6 mmHg and without loss of light perception. Results. The mean follow-up duration was 11.7 ± 5.5 (range, 6–23) months. The mean IOP before the AGV implantation was 37.9 ± 6.7 mmHg with an average of 3.5 ± 1.2 drugs. At the final visit, the mean IOP was 15.9 ± 4.6 mmHg (p=0.001) and the mean number of glaucoma medications decreased to 2.3 ± 1.3 (p=0.021). At the last visit, 11 eyes (84.4%) had stable or improved VA and one eye (7.7%) had a final VA of no light perception. Surgical success was achieved in 11 of the 13 eyes (84.4%). Postoperative complications were bleb encapsulation (69.2%), early hypotony (38.5%), hyphema (23.1%), decompression retinopathy (23.1%), choroidal detachment (15.4%), intraocular hemorrhage (7.7%), and late endophthalmitis (7.7%). One eye (7.7%) was enucleated because of late endophthalmitis. Conclusions. Despite complications necessitating medical and surgical interventions, vitrectomized eyes were effectively managed with AGV implantation.

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