Clinical outcomes of Ahmed glaucoma valve implantation without fixation of a plate: The free plate technique

Lee, Han Min; Park, Kee Sup; Jeon, Yoo Young; Kim, Woo Jin; Lee, Nam Ho; Kim, Kyoung Nam; Kim, Chang Sik

doi:10.1371/journal.pone.0241886

Cited by 3 publications

(1 citation statement)

References 27 publications

(30 reference statements)

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“…In this study, clinical outcomes were comparable between the two groups, including postoperative IOP control, the number of medication, BCVA, and postoperative complications. The success rates at 24 months were 83.3% and 76.3% in the CS AGV and AC AGV groups, respectively, which were similar to previously reported success rates after AC AGV (ranging from 73.6% to 84.2%, with mean follow-up ranging from 12 to 24 months) 21 – 25 .…”

Section: Discussionsupporting

confidence: 88%

Corneal endothelial cell changes and surgical results after Ahmed glaucoma valve implantation: ciliary sulcus versus anterior chamber tube placement

Kim

Lee

et al. 2021

Sci Rep

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We compared the changes in corneal endothelial cells and surgical outcomes after Ahmed glaucoma valve (AGV) implantation with the valve tip inserted either into ciliary sulcus (CS) or anterior chamber (AC). We retrospectively reviewed the medical records of patients treated with CS AGV (n = 24) and AC AGV (n = 38). We compared the preoperative and postoperative central corneal endothelial cell density (ECD), endothelial cell coefficient of variation (CV), best-corrected visual acuity, intraocular pressure (IOP), number of glaucoma medications, and postoperative complications in the two groups. Both groups had similar baseline characteristics and follow-up period. At the last follow-up, the AC AGV group had significantly higher mean monthly ECD loss (17.47 ± 11.50 cells/mm2 vs. 6.40 ± 7.69 cells/mm2, p < 0.0001) and greater proportion of mean monthly ECD loss than the CS AGV group (0.84 ± 0.53 vs. 0.36 ± 0.39%, p < 0.0001). Both groups had similar mean monthly CV changes. The qualified success rates at 2 years were 83.3% and 76.3% for the CS AGV and AC AGV groups, respectively. Although similar surgical outcomes including visual acuity, IOP, number of glaucoma medications, and postoperative complications were obtained following CS AGV and AC AGV, corneal ECD loss was higher in the AC AGV group. Thus, CS AGV may be a better surgical option than AC AGV.

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Section: Discussionsupporting

confidence: 88%

Corneal endothelial cell changes and surgical results after Ahmed glaucoma valve implantation: ciliary sulcus versus anterior chamber tube placement

Kim

Lee

et al. 2021

Sci Rep

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The extension of indications for the implantation of Ahmed valve

Nikolaenko

Brzheskiy

Аntonova

2023

Ophthalmology Reports

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Ahmed valve implant and its place in the surgical treatment of glaucoma

Oblovatskaya¹,

Nikolaenko

2022

Glaucoma

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PURPOSE. To determine the indications for Ahmed glaucoma valve implantation by analyzing the duration and regimen of hypotensive therapy, and the configuration of previous interventions.METHODS. Retrospective evaluation of the duration and intensity of therapeutic treatment, and the configuration of laser and surgical procedures in a group of 139 patients (153 interventions) who underwent Ahmed glaucoma valve implantation in 2009–2011, and another group of 270 patients (272 interventions) who were treated in 2019–2010.RESULTS. The average age of candidates for implantation of the Ahmed valve increased from 63 y.o. in 2009–2011 to 70 y.o. in 2019–2020. The treatment preceding Ahmed valve implantation had extended in duration from 8.8±1.4 to 11.2±1.1 years leading to an increase in cumulative preservative toxicity from 9 293.8±968.6 to 10 038.1±888.9 µg. The main classes of intraocular pressure (IOP)-lowering drugs were prostaglandin analogues (75.4% in 2009–2011 and 77.1% in 2019–2020), carbonic anhydrase inhibitors (75.4% and 82.6%), and beta-blockers (57.4% and 61.1% accordingly). Laser trabeculoplasty was performed in only 11.8% and 28.7% of cases, respectively. Hypotensive filtering operations preceded valve implantation in 63.4% (2009–2011) and 80.5% of cases (2019–2020), while in the rest of patients the installation of the Ahmed device was the first surgical procedure. Despite treatment, the rate of glaucoma progression to an advanced stage increased from 62.1% in 2009–2011 to 82.7% in 2019–2020.CONCLUSION. With increase in the duration of conservative management of glaucoma its progression continues, while the increased preservative toxicity reduces the effectiveness of conjunctival surgery. In conclusion, earlier switch to surgical methods of IOP normalization involving the use of the Ahmed valve is advisable not only in secondary, but also in primary open-angle glaucoma treated conser-vatively for a long (over 7–8 years) period.

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Clinical outcomes of Ahmed glaucoma valve implantation without fixation of a plate: The free plate technique

Cited by 3 publications

References 27 publications

Corneal endothelial cell changes and surgical results after Ahmed glaucoma valve implantation: ciliary sulcus versus anterior chamber tube placement

Corneal endothelial cell changes and surgical results after Ahmed glaucoma valve implantation: ciliary sulcus versus anterior chamber tube placement

The extension of indications for the implantation of Ahmed valve

Ahmed valve implant and its place in the surgical treatment of glaucoma

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