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Mid-term results of Ahmed glaucoma valve for neovascular glaucoma Hiroko Yamaguchi 1 , Koji Namiguchi 3 , Hiroko Hosokawa 4 , Tomoharu Shinozaki 1 , Yoshitaka Tasaka 1,3 , Shiro Mizoue 2 , Atsushi Shiraishi 2 , Yuichi Ohashi 1 1Department of Ophthalmology, Minami Matsuyama Hospital 2Department of Ophthalmology, Ehime University Graduate School of Medicine 3Department of Ophthalmology and regenerative medicine, Ehime University Graduate School of Medicine 4Department of Ophthalmology, Matsuyama Shimin Hospital pp.478-485
Published Date 2025/4/15
DOI https://doi.org/10.11477/mf.037055790790040478
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Abstract Purpose:To investigate the mid-term postoperative results of Ahmed Glaucoma Valve(AGV)insertion in patients with neovascular glaucoma(NVG).

Materials and Methods:Eighteen eyes of 16 patients with NVG who underwent AGV insertion were followed up for>1 year. The mean age and observation period were 61.7±15.4 years and 32.1±5.3 months, respectively. The primary diseases were proliferative diabetic retinopathy and central retinal vein occlusion in fourteen and four eyes, respectively. The AGV insertion sites were the anterior chamber and pars plana in seven and eleven eyes, respectively. The intraocular pressure, survival rate, survival rate according to insertion site, antiglaucoma drug score, and postoperative complications were evaluated.

Results:The intraocular pressure decreased significantly from 28.4±7.4 mmHg preoperatively to 15.4 mmHg(p<0.001), 15.7 mmHg(p=0.00109), and 16.0 mmHg(p=0.0128)1, 2, and 3 years postoperatively, respectively. The 1-, 2-, and 3-years survival rates were 88.9%, 88.9%, and 82.5%, respectively. The survival rates according to insertion site were 85.7% and 90.9% at 1 year(p=0.77), 85.7% and 90.9% at 2 years(p=0.77), and 71.4% and 90.9% at 3 years(p=0.37)for the anterior and pars plana, respectively, indicating no significant differences. The antiglaucoma drug score significantly decreased from 3.8 preoperatively to 1.8(p=0.00216), 1.9(p=0.00721), and 2.2(p=0.0350)1, 2, and 3 years postoperatively, respectively. Postoperative complications included hypertensive phase(nine eyes), vitreous hemorrhage(four eyes), choroidal detachment(two eyes), shallow anterior chamber(one eye), and hyphema(one eye).

Conclusion:The findings of the present study suggest that AGV insertion is an effective technique for NVG.


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