Evaluation of a modified graft-free technique of Ahmed glaucoma valve (AGV) implantation
Taylor, SRJ and Lim, R (2015) Evaluation of a modified graft-free technique of Ahmed glaucoma valve (AGV) implantation .
Full text not available from this repository.Abstract
Title: Evaluation of a modified graft-free technique of Ahmed glaucoma valve (AGV) implantation Purpose: To determine the outcome of AGV implanted via a scleral tunnel, without using any patch grafts. Method: Retrospective case series of 18 consecutive patients undergoing AGV via scleral tunnels in a single hospital from 2011-2015. Results: The mean follow-up was 1.7 ± 1.4 years. The mean age of the patients at the time of surgery was 73.4 ± 9.2 years old. The cases include 72% neovascular glaucoma, 11% primary open angle glaucoma, 6% posner schlossman, 6% pseudoexfoliation and 6% uveitic glaucoma. Mean intraocular pressures (IOPs) before and after AGV implant were 40.8 ± 11.9mmHg and 15.9 ± 7.9mmHg respectively. Median visual acuity before and after AGV implant were both counting fingers. There was no tube erosion noted, although 2 patients (11%) had end-plate erosion, requiring explantation of the AGV. Other post-operative complications (occurring at any point) include hyphaemas >1mm (33%), choroidal effusions (22%), shallow AC requiring healon injection (6%), tenon’s cyst requiring excision (6%) and fibrosed bleb requiring needling (6%). All hyphaemas and choroidal effusions resolved without intervention. Success at final follow-up (IOP between 5 and 21mm Hg with least 20% reduction from baseline IOP, without additional glaucoma surgery nor loss of light perception) was 72%. Conclusion: In this graft-free technique of AGV implantation, there were no tube erosions but 2 patients (11%) had end-plate exposure. This end-plate exposure rate is comparable to the range reported in traditional AGV implant using patch-grafts.
Item Type: | Other | |||||||||
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Divisions : | Surrey research (other units) | |||||||||
Authors : |
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Date : | 26 November 2015 | |||||||||
Depositing User : | Symplectic Elements | |||||||||
Date Deposited : | 17 May 2017 10:42 | |||||||||
Last Modified : | 23 Jan 2020 10:52 | |||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/828884 |
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