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      Complication of micro-bypass stenting: the anterior chamber displacement of a Xen implant Translated title: Complicação de stent micro-bypass: o deslocamento da câmara anterior de um implante de Xen

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          Abstract

          ABSTRACT Although minimally invasive glaucoma surgery using different types of implants is a promising strategy for treating glaucoma, potential long-term complications require further evaluation. Here, we report a case of the anterior chamber displacement of a Xen implant due to a maneuver aimed at correcting a dysfunctional and bent subconjunctival implant.

          Translated abstract

          RESUMO Embora a cirurgia de glaucoma minimamente in vasiva, que usa diferentes tipos de implantes, seja uma estratégia promissora para o tratamento do glaucoma, as possíveis complicações a longo prazo exigem uma avaliação mais aprofundada. Aqui, relatamos um caso de deslocamento da câmara anterior de um implante Xen devido a uma manobra que visa corrigir um implante subconjuntival disfuncional e dobrado.

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          Immune responses to implants - a review of the implications for the design of immunomodulatory biomaterials.

          Sandra Franz, Stefan Rammelt, Dieter Scharnweber … (2011)
          A key for long-term survival and function of biomaterials is that they do not elicit a detrimental immune response. As biomaterials can have profound impacts on the host immune response the concept emerged to design biomaterials that are able to trigger desired immunological outcomes and thus support the healing process. However, engineering such biomaterials requires an in-depth understanding of the host inflammatory and wound healing response to implanted materials. One focus of this review is to outline the up-to-date knowledge on immune responses to biomaterials. Understanding the complex interactions of host response and material implants reveals the need for and also the potential of "immunomodulating" biomaterials. Based on this knowledge, we discuss strategies of triggering appropriate immune responses by functional biomaterials and highlight recent approaches of biomaterials that mimic the physiological extracellular matrix and modify cellular immune responses. Copyright © 2011 Elsevier Ltd. All rights reserved.
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            Fluid Dynamics of a Novel Micro-Fistula Implant for the Surgical Treatment of Glaucoma.

            Iqbal Ahmed, Herbert Reitsamer, Arsham Sheybani (2015)
            The purpose of this study was to describe the fluidics of a novel non-valved glaucoma implant designed to prevent hypotony and compare the fluidics of this device with two commonly used non-valved glaucoma devices.
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              Comparison of the morphologic changes after selective laser trabeculoplasty and argon laser trabeculoplasty in human eye bank eyes.

              Theresa R. Kramer, Robert J Noecker (2001)
              To compare the histopathologic changes in the human trabecular meshwork (TM) after argon laser trabeculoplasty (ALT) and selective laser trabeculoplasty (SLT) with a Q-switched, frequency-doubled, neodymium:yttrium-aluminum-garnet laser. Human "in vitro" experimental study. TISSUE AND CONTROLS: Eight human autopsy eyes were obtained within 18 hours of death from persons aged 71 to 78 years. The anterior segment of autopsy eyes was isolated, and one half of each trabecular meshwork underwent SLT and the other half ALT. Specimens were evaluated with scanning and transmission electron microscopy. Structural changes in the TM were detected by scanning electron microscopy, and cellular or intracellular changes were seen with transmission electron microscopy. Evaluation of the TM after ALT revealed crater formation in the uveal meshwork at the junction of the pigmented and nonpigmented TM. Coagulative damage was evident at the base and along the edge of craters, with disruption of the collagen beams, fibrinous exudate, lysis of endothelial cells, and nuclear and cytoplasmic debris. Evaluation of the TM after SLT revealed no evidence of coagulative damage or disruption of the corneoscleral or uveal trabecular beam structure. Minimal evidence of mechanical damage was present after SLT, and the only ultrastructural evidence of laser tissue interaction was cracking of intracytoplasmic pigment granules and disruption of trabecular endothelial cells. SLT applied "in vitro" to the TM of human eye bank eyes seemed to cause no coagulative damage and less structural damage to the human TM when compared with ALT and, therefore, may be a safer and more repeatable procedure.
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                Author and article information

                Contributors
                Kursat Atalay: Role: ND
                Senay Asik Nacaroglu: Role: ND
                Ahmet Kirgiz: Role: ND
                Journal
                Journal ID (publisher-id): abo
                Title: Arquivos Brasileiros de Oftalmologia
                Abbreviated Title: Arq. Bras. Oftalmol.
                Publisher: Conselho Brasileiro de Oftalmologia (São Paulo, SP, Brazil )
                ISSN (Print): 0004-2749
                ISSN (Electronic): 1678-2925
                Publication date (Print and electronic): October 2018
                Volume: 81
                Issue: 6
                Pages: 514-516
                Affiliations
                [1] Istambu orgnameIstanbul Health Sciences University orgdiv1Bagcilar Training and Research Hospital orgdiv2Ophthalmology Department Turkey
                Article
                Publisher ID: S0004-27492018000600514
                DOI: 10.5935/0004-2749.20180098
                SO-VID: b87fab04-e6ee-4fad-9705-81ccd72535f2
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date received : 06 February 2018
                Date accepted : 10 June 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 8, Pages: 3
                Product

                SciELO Brazil


                Keywords: Glaucoma,Minimally invasive surgical procedures/methods; Anterior chamber,Filtering surgery,Cirurgia filtrante,Procedimentos cirúrgicos minimamente invasivos/métodos,Câmara anterior
                Data availability:
                Keywords: Glaucoma, Minimally invasive surgical procedures/methods; Anterior chamber, Filtering surgery, Cirurgia filtrante, Procedimentos cirúrgicos minimamente invasivos/métodos, Câmara anterior

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