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D.M. Hinkle, D. Zurakowski, R.S. Ayyala; A Comparison of the Polypropylene Plate AhmedTM Glaucoma Valve to the Silicone Plate AhmedTM Glaucoma Flexible Valve . Invest. Ophthalmol. Vis. Sci. 2005;46(13):83.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To compare the surgical outcomes following the implantation of the polypropylene plate Ahmed glaucoma valve ( S–2) vs the newer silicone plate AGV ( FP 7). Methods: A retrospective chart review of all patients who underwent S–2 and FP 7 implantations over a 3 year period with minimum 12 months follow up was performed. All surgeries were performed by the same surgeon (RSA). 25 eyes of 22 patients were included in the FP 7 group vs 26 eyes of 22 patients. Results: There were no significant differences in the diagnosis, preop IOP and post op IOP at 1,2,and 3 months, the VA at all time points and in the number of pre and post op medications between the two groups. The mean IOP and standard deviation at 3 months, 6 months, and 12 months were as follows: FP 7 group– 14.85 + 5.2 (CI 2); 12.8 + 4 (CI 1.6) and 12.3 + 3.8 9 (CI 1.6); S–2 group– 15.7 + 7.9 (CI 3.1); 17.2 + 10.4 (CI 4) and 16.1 + 5.6 (CI 2.2). The IOP was lower in the FP 7 group at all time points reaching statistical significance at 9 and 12 months ( p– 0.02). There were no devastating complications in either group related to surgery. Conclusions: FP 7 model silicone plate AGV resulted in lower IOP compared to the older S2 polypropylene plate AGV. This may be related to the difference in the inflammatory reaction induced by the plate biomaterial.
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