ArticleOphthalmology2021
The Effect of Tube Location on Corneal Endothelial Cells in Patients with Ahmed Glaucoma Valve.
Article in Ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
39 citing papers in PubMed, 61 citations in OpenAlex.
- Postoperative Complications in the Primary Tube Versus Trabeculectomy Study During 5 Years of Follow-up.Ophthalmology · 2022Trial
- Ciliary sulcus tube placement may not protect the corneal endothelium in exfoliation glaucoma after Baerveldt glaucoma implantation.Eye (London, England) · 2026Article
- Sequential Surgical Management of Refractory Primary Angle-Closure Glaucoma in a Functionally Monocular Patient.Life (Basel, Switzerland) · 2026Article
- Epidemiology and risk factors for corneal blindness in China: a multicentre retrospective study of 15,937 inpatients.Eye (London, England) · 2026Observational
- Article
- Sulcus Placement of PreserFlo Microshunt in Iridocorneal Endothelial Syndrome: A Case Report.Case reports in ophthalmological medicine · 2026Article
- Long-term outcomes of the Şimşek technique vs long scleral tunnel method in Ahmed glaucoma valve implantation.International ophthalmology · 2025Article
- Midterm outcomes of Ahmed glaucoma valve implantation and trabeculectomy in exfoliative glaucoma.Japanese journal of ophthalmology · 2025Article
- Preserflo™ microshunt for the treatment of refractory childhood glaucoma: A case series study.American journal of ophthalmology case reports · 2025Article
- Is Combined PhacoAhmed Less Effective than Ahmed Surgery Alone? A 5-Year Retrospective Study of Long-Term Effects.Vision (Basel, Switzerland) · 2025Article
- Incidence of Corneal Graft Failure with Glaucoma Drainage Device Placement in the Anterior Chamber Compared to the Ciliary Sulcus.Ophthalmology and therapy · 2025Article
- Utility of intraoperative optical coherence tomography in filtration surgery using MicroShunt.Japanese journal of ophthalmology · 2025Observational
- Practice Patterns and Technology Readiness for Sulcus Tube Placement: A Survey of the American Glaucoma Society Membership.Clinical ophthalmology (Auckland, N.Z.) · 2025Article
- Intermediate-term impact on corneal endothelial cells and efficacy of Preserflo MicroShunt implantation in patients with open-angle glaucoma - a prospective study over two years.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024Observational
- Long-term surgical outcomes of combined Ahmed glaucoma valve implantation and phacoemulsification with intraocular lens implantation for patients with glaucoma secondary to iridocorneal endothelial syndrome.BMC ophthalmology · 2024Article
- Three techniques for guidewire-assisted sulcus glaucoma tube shunt placement.American journal of ophthalmology case reports · 2024Article
- Same-quadrant Baerveldt Glaucoma Implant-250 to Baerveldt Glaucoma Implant-350 exchange.American journal of ophthalmology case reports · 2024Article
- Sulcus Tube Internal Needle Guidewire Technique for Glaucoma Drainage Device Placement: Improving Surgical Ease and Precision.Ophthalmology and therapy · 2024Article
- Outcomes of Ahmed Glaucoma Valve Implantation with Subsequent Trans-Scleral Diode Cyclophotocoagulation as the Main Intervention if IOP Remained Medically Uncontrolled.Clinical ophthalmology (Auckland, N.Z.) · 2024Article
- The effects of the first versus second glaucoma drainage implant surgery in patients with primary open-angle glaucoma.BMC ophthalmology · 2023Article
Corrections and comments
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Authors and funding
10 authors at 6 institutions in 3 countries.
Funding
Abstract
purposeTo compare the effects of the Ahmed glaucoma valve (AGV; New World Medical, Rancho Cucamonga, CA) with sulcus versus anterior chamber (AC) tube placement on the corneal endothelial density and morphology over time.
designNonrandomized, interventional study.
participantsThis study included 106 eyes from 101 pseudophakic patients who had the AGV tube placed in the AC (acAGV) and 105 eyes from 94 pseudophakic patients who had the AGV tube placed in the ciliary sulcus (sAGV).
methodsAll patients underwent preoperative specular microscopy, which was repeated postoperatively in 2019. The patients' demographic information, glaucoma diagnoses, and basic ocular information were obtained on chart review. Anterior segment OCT was conducted for patients who underwent sAGV to evaluate the sulcus tube position. Gonioscopy was performed to document peripheral anterior synechiae (PAS). Linear mixed-effects models were used to compare the different ocular and endothelial measurements between the 2 groups and to identify risk factors for endothelial cell density (ECD) loss over time.
main outcome measuresMonthly change in corneal endothelial measurements, including ECD and coefficient of variation (CV), calculated as the difference between preoperative and postoperative measurements divided by the number of months from the time of surgery to postoperative specular microscopy.
resultsThe acAGV and sAGV groups were comparable in all baseline characteristics except that the acAGV group had longer follow-up (37.6 vs. 20.1 months, respectively, P < 0.001). Mean monthly loss in central ECD was significantly more in the acAGV group (mean ± standard deviation: 29.3±29.7 cells/mm
conclusionsCompared with anterior segment placement, ciliary sulcus tube implantation may be a preferred surgery approach to reduce endothelial cell loss in pseudophakic patients.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.