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41 Results Found

  • Review
  • Open Access
59 Citations
12,345 Views
15 Pages

PreserFlo® MicroShunt: An Overview of This Minimally Invasive Device for Open-Angle Glaucoma

  • Gloria Gambini,
  • Matteo Mario Carlà,
  • Federico Giannuzzi,
  • Tomaso Caporossi and ,
  • Umberto De Vico,
  • Alfonso Savastano,
  • Antonio Baldascino,
  • Clara Rizzo,
  • Raphael Kilian and
  • Stanislao Rizzo
  • + 6 authors+ 1 author

9 February 2022

For moderate-to-severe glaucoma, trabeculectomy remains the “gold standard” intraocular pressure (IOP)-lowering treatment; nonetheless, this method requires extensive post-operative maintenance. Microinvasive glaucoma surgery (MIGS) treat...

  • Article
  • Open Access
42 Citations
4,820 Views
11 Pages

Efficacy of the PRESERFLO MicroShunt and a Meta-Analysis of the Literature

  • Shigeo S. M. Pawiroredjo,
  • Wichor M. Bramer,
  • Noemi D. Pawiroredjo,
  • Jan Pals and ,
  • Huub J. Poelman,
  • Victor A. de Vries,
  • Roger C. W. Wolfs and
  • Wishal D. Ramdas
  • + 3 authors+ 0 author

1 December 2022

Background: Recent studies on the PRESERFLO MicroShunt suggest that it may be effective in lowering intraocular pressure (IOP); however, the number of studies on this device remains limited. Therefore, we assessed the efficacy of the PRESERFLO MicroS...

(This article belongs to the Special Issue Advances in Glaucoma Surgery)
  • Article
  • Open Access
18 Citations
3,023 Views
12 Pages

One-Year Outcomes of PreserfloTM MicroShunt Implantation versus Trabeculectomy for Pseudoexfoliation Glaucoma

  • Matthias Nobl,
  • Clara Grün,
  • Stefan Kassumeh,
  • Siegfried Priglinger and
  • Marc J. Mackert

20 April 2023

This retrospective, single-center study evaluates the safety and efficacy of PreserfloTM MicroShunt (MicroShunt) implantations compared to trabeculectomies (TETs) in patients diagnosed with pseudoexfoliation glaucoma (PEXG). A total of 31 eyes from 2...

(This article belongs to the Special Issue Diagnosis, Treatment, and Prevention of Glaucoma)
  • Feature Paper
  • Article
  • Open Access
4 Citations
1,990 Views
11 Pages

23 November 2023

This study aims to investigate the pressure characteristics of the PRESERFLO MicroShunt, a microinvasive glaucoma device, using an in vitro setup. Additionally, the study explores the impact of the scleral tissue surrounding the device on its pressur...

(This article belongs to the Special Issue Innovation in Glaucoma: Imaging and Visual Function)
  • Article
  • Open Access
2 Citations
1,372 Views
10 Pages

Effect of Subconjunctival Healaflow in Filtrating Surgery with Preserflo MicroShunt in Primary Open Angle Glaucoma

  • Leonie F. Keidel,
  • Miranda Gehrke,
  • Stefan Kassumeh,
  • Lara Buhl and ,
  • Siegfried G. Priglinger and
  • Marc J. Mackert
  • + 1 author+ 0 author

25 August 2025

Background/Objectives: This work aims to clarify whether the subtenon use of the sodium hyaluronate product Healaflow in filtrating surgery with PreserFlo MicroShunt positively influences the early postoperative course in terms of control of intraocu...

(This article belongs to the Section Ophthalmology)
  • Article
  • Open Access
23 Citations
7,365 Views
13 Pages

Anterior Segment-Optical Coherence Tomography Bleb Morphology Comparison in Minimally Invasive Glaucoma Surgery: XEN Gel Stent vs. PreserFlo MicroShunt

  • Gloria Gambini,
  • Matteo Mario Carlà,
  • Federico Giannuzzi,
  • Francesco Boselli and ,
  • Giulia Grieco,
  • Tomaso Caporossi,
  • Umberto De Vico,
  • Alfonso Savastano,
  • Antonio Baldascino and
  • Stanislao Rizzo
  • + 8 authors+ 3 authors

Background: The purpose of this study is to compare the morphology of six-month follow-up blebs created by a subconjunctival glaucoma surgical device (XEN45) to those created by a PreserFlo MicroShunt with a sub-Tenon insertion, utilizing AS-OCT. Met...

(This article belongs to the Special Issue Anterior-Segment Optical Coherence Tomography as a Diagnostics Tool)
  • Article
  • Open Access
1 Citations
1,792 Views
15 Pages

Intraluminal 10-0 Nylon Stenting in PRESERFLO™ MicroShunt Surgery for Pseudoexfoliation Glaucoma

  • Miranda Gehrke,
  • Leonie F. Keidel,
  • Lara Buhl,
  • Siegfried G. Priglinger and
  • Marc J. Mackert

3 September 2025

Background/Objectives: Early postoperative hypotony and complications like choroidal detachment can occur after Preserflo MicroShunt (MS) implantation in patients with pseudoexfoliation glaucoma (PEXG). To prevent these risks, outflow from the micros...

(This article belongs to the Special Issue New Insights into Glaucoma)
  • Article
  • Open Access
16 Citations
6,283 Views
12 Pages

We analyze the surgical outcomes and early complications with their management of the Preserflo MicroShunt (Santen Pharmaceutical Co., Ltd., Osaka, Japan) at six-month follow-up. The study is conducted between March 2021 and May 2022. Best-corrected...

  • Article
  • Open Access
26 Citations
3,317 Views
10 Pages

Systematic Preserflo MicroShunt Intraluminal Stenting for Hypotony Prevention in Highly Myopic Patients: A Comparative Study

  • Enrico Lupardi,
  • Gian Luca Laffi,
  • Antonio Moramarco,
  • Piero Barboni and
  • Luigi Fontana

20 February 2023

Transient hypotony is the most common early complication after Preserflo MicroShunt (PMS) implantation. High myopia is a risk factor for the development of postoperative hypotony-related complications; therefore, it is advisable that PMS implantation...

(This article belongs to the Section Ophthalmology)
  • Article
  • Open Access
8 Citations
4,125 Views
11 Pages

15 October 2024

Objectives: This study aimed to evaluate the postoperative outcomes of the PreserFlo MicroShunt in Asian patients with exfoliation glaucoma. Methods: We used the Kaplan–Meier method to analyze 29 eyes of 29 patients with exfoliation glaucoma (m...

(This article belongs to the Special Issue Clinical Debates in Minimally Invasive Glaucoma Surgery (MIGS))
  • Article
  • Open Access
12 Citations
3,469 Views
12 Pages

2 November 2023

Trabeculectomy has traditionally been upheld as the gold standard in glaucoma surgery, but recent advancements, including the PRESERFLO® MicroShunt, have introduced less invasive techniques to mitigate complications and reduce intraocular pressure (I...

(This article belongs to the Section Biomedical Optics)
  • Article
  • Open Access
4 Citations
2,300 Views
13 Pages

22 October 2025

Backgrounds/Objectives: Trabeculectomy is the gold standard for glaucoma drainage surgery, but it is associated with a risk of sight-threatening complications. The PreserFlo MicroShunt (PF) is a less invasive alternative that aims to reduce complicat...

(This article belongs to the Special Issue Glaucoma Surgery: Current Challenges and Future Perspectives)
  • Article
  • Open Access
1 Citations
2,185 Views
8 Pages

To evaluate the effectiveness of the PRESERFLO MicroShunt (PFM) in reducing intraocular pressure (IOP) ex vivo in porcine eyes using an infusion pump system and to simulate various IOP conditions, In this study, porcine eyes received increasing flows...

(This article belongs to the Special Issue Recent Advances and Trends in Ophthalmic Diseases Treatment)
  • Article
  • Open Access
220 Views
16 Pages

PreserFlo MicroShunt Outcomes in Asia: Two-Year Results with Exploratory Comparisons of Standalone and Combined Surgery from a Regional Tertiary Centre

  • Abdus Samad Ansari,
  • Yamon Thant Syn,
  • Phey Feng Lo,
  • Zhu Li Yap and ,
  • Paul J. Foster,
  • Shamira A. Perera and
  • Tina T. Wong
  • + 2 authors+ 0 author

9 October 2026

Background/Objectives: To evaluate the two-year efficacy and safety of PreserFlo MicroShunt (PMS) implantation in an Asian cohort with primary open-angle glaucoma via post hoc exploratory comparison of standalone PMS versus combined phacoemulsificati...

(This article belongs to the Section Ophthalmology)
  • Article
  • Open Access
13 Citations
3,514 Views
14 Pages

MicroShunt versus Trabeculectomy for Surgical Management of Glaucoma: A Retrospective Analysis

  • Michael X. Fu,
  • Eduardo M. Normando,
  • Sheila M. H. Luk,
  • Mira Deshmukh and ,
  • Faisal Ahmed,
  • Laura Crawley,
  • Sally Ameen,
  • Niten Vig,
  • Maria Francesca Cordeiro and
  • Philip A. Bloom
  • + 5 authors+ 0 author

18 September 2022

This case-control study aims to compare the efficacy, safety, and postoperative burden of MicroShunt versus trabeculectomy. The first consecutive cohort of MicroShunt procedures (n = 101) was matched to recent historical trabeculectomy procedures (n...

(This article belongs to the Special Issue Advances in Glaucoma Surgery)
  • Article
  • Open Access
2 Citations
2,930 Views
14 Pages

14 January 2025

Background: The PreserFlo™ MicroShunt (PFMS) is a bleb-forming device considered to be less invasive than traditional glaucoma surgery such as trabeculectomy. This study evaluates the 1-year success rates as well as safety profile of PFMS in pa...

(This article belongs to the Section Ophthalmology)
  • Article
  • Open Access
29 Citations
7,483 Views
14 Pages

Long-Term Outcomes of the PRESERFLO MicroShunt Implant in a Heterogeneous Glaucoma Cohort

  • Jens Julian Storp,
  • Friederike Elisabeth Vietmeier,
  • Ralph-Laurent Merté,
  • Raphael Koch and ,
  • Julian Alexander Zimmermann,
  • Nicole Eter and
  • Viktoria Constanze Brücher
  • + 2 authors+ 0 author

4 July 2023

The Preserflo MicroShunt represents a novel glaucoma treatment device, necessitating long-term follow-up data to accurately assess its efficacy. The aim of this study is to report real-world data of a heterogenous glaucoma cohort who received Preserf...

(This article belongs to the Special Issue Advances in Glaucoma Surgery)
  • Review
  • Open Access
35 Citations
6,446 Views
15 Pages

The PreserFlo MicroShunt in the Context of Minimally Invasive Glaucoma Surgery: A Narrative Review

  • Emil Saeed,
  • Kinga Gołaszewska,
  • Diana Anna Dmuchowska,
  • Renata Zalewska and
  • Joanna Konopińska

Recently, the quest for novel glaucoma surgical techniques and devices has been underway. Trabeculectomy remains the gold standard, but it requires the implantation of glaucoma drainage devices and frequent follow-ups, and it also carries a high risk...

  • Article
  • Open Access
2 Citations
2,064 Views
12 Pages

The Preserflo MicroShunt Affects Microvascular Flow Density in Optical Coherence Tomography Angiography

  • Jens Julian Storp,
  • Hannah Schatten,
  • Friederike Elisabeth Vietmeier,
  • Ralph-Laurent Merté and ,
  • Larissa Lahme,
  • Julian Alexander Zimmermann,
  • Verena Anna Englmaier,
  • Nicole Eter and
  • Viktoria Constanze Brücher
  • + 4 authors+ 0 author

Intraocular pressure (IOP) lowering surgery has been shown to alter microvascular density in glaucoma patients. The aim of this study is to report changes in retinal flow density (FD) over the course of treatment with the Preserflo MicroShunt, using...

(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches)
  • Article
  • Open Access
15 Citations
3,223 Views
10 Pages

Clinical Practice Preferences for Glaucoma Surgery in Japan in 2024

  • Kentaro Iwasaki,
  • Shogo Arimura,
  • Yoshihiro Takamura and
  • Masaru Inatani

17 March 2025

Objectives: This study evaluated the clinical preferences of glaucoma specialists regarding glaucoma surgery and postoperative management in Japan in 2024. Methods: A survey about clinical practice preferences regarding glaucoma surgery and postopera...

(This article belongs to the Special Issue Clinical Debates in Minimally Invasive Glaucoma Surgery (MIGS))
  • Article
  • Open Access
6 Citations
2,925 Views
11 Pages

Preserflo-MicroShunt: Postoperative Effects on Endothelial Cell Density and Corneal Thickness

  • Sebastian Dierse,
  • Eliane Luisa Esser,
  • Ralph-Laurent Merté,
  • Sami Al-Nawaiseh and ,
  • Martin Dominik Leclaire,
  • Nicole Eter and
  • Viktoria Constanze Brücher
  • + 2 authors+ 0 author

Background: The aim of this study was to evaluate the effects of Preserflo implantation on endothelial cell density (ECD), corneal thickness, intraocular pressure (IOP), and the use of antiglaucoma medications over a 12-month follow-up period. Method...

(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 2nd Edition)
  • Article
  • Open Access
28 Citations
3,222 Views
9 Pages

Safety and Efficacy of the Preserflo® Microshunt in Refractory Glaucoma: A One-Year Study

  • Alexandre Majoulet,
  • Benjamin Scemla,
  • Pascale Hamard,
  • Emmanuelle Brasnu and ,
  • Alexandre Hage,
  • Christophe Baudouin and
  • Antoine Labbé
  • + 2 authors+ 0 author

29 November 2022

Purpose: To evaluate the safety and efficacy of Preserflo® microshunt implantation in eyes with refractory glaucoma. Methods: In this retrospective study, a cohort of patients who underwent Preserflo® microshunt implantation between April 201...

(This article belongs to the Special Issue Advances in Minimally Invasive Ophthalmic Surgery)
  • Article
  • Open Access
6 Citations
3,020 Views
12 Pages

Preserflo MicroShunt versus Trabeculectomy: Efficacy and Surgical Success within a Heterogenous Patient Cohort

  • Lynn Anna Barbara Zweifel,
  • Jens Julian Storp,
  • Friederike Elisabeth Vietmeier,
  • Moritz Fabian Danzer and ,
  • Ralph-Laurent Merté,
  • Nicole Eter and
  • Viktoria Constanze Brücher
  • + 2 authors+ 0 author

17 September 2024

To compare success rates of trabeculectomy (TE) and Preserflo MicroShunt (PMS) in heterogenous glaucoma cohorts with regards to different pre- and postoperative therapeutic regimens. Data of 187 glaucoma patients who either received TE (73 eyes) or P...

(This article belongs to the Collection New Diagnostic and Therapeutic Developments in Eye Diseases)
  • Article
  • Open Access
4 Citations
2,069 Views
12 Pages

PRESERFLO™ Microshunt: 1-Year Results of a 25-Gauge vs. 27-Gauge Needle Tract

  • Stefan Steiner,
  • Hemma Resch,
  • Barbara Kiss and
  • Clemens Vass

29 March 2024

Background: The purpose of this study was to evaluate the effectiveness and safety of the PreserFlo™ microshunt (PMS) using a 25-Gauge vs. 27-Gauge needle tract. Methods: This is a prospective postoperative examination of 60 glaucoma eyes that...

(This article belongs to the Section Ophthalmology)
  • Feature Paper
  • Article
  • Open Access
659 Views
16 Pages

Efficacy and Safety of the Preserflo® Microshunt as a Standalone Procedure Versus Its Combination with Phacoemulsification

  • Sieta Gassama,
  • Paul Bastelica,
  • Mathilde Huard,
  • Karine Lagrené and ,
  • Zohra Brouk,
  • Esther Blumen-Ohana,
  • Emmanuelle Brasnu-De-Cenival,
  • Juliette Buffault,
  • Pascale Hamard and
  • Antoine Labbé
  • + 8 authors+ 3 authors

7 May 2026

Background/Objectives: Glaucoma is a leading cause of irreversible blindness, and lowering intraocular pressure (IOP) is the only proven strategy to slow disease progression. The Preserflo® Microshunt (PMS) is a minimally invasive subconjunctival...

(This article belongs to the Special Issue Glaucoma Surgery: Current Challenges and Future Perspectives)
  • Article
  • Open Access
13 Citations
3,749 Views
12 Pages

Evaluation of bleb morphology is a vital part of successful filtration glaucoma surgery. The PRESERFLO-MicroShunt (PRESERFLO) and XEN-Gel-Stent (XEN) are drainage devices implanted using different surgical approaches (ab externo and ab interno, respe...

(This article belongs to the Section Biomedical Optics)
  • Article
  • Open Access
5 Citations
4,363 Views
15 Pages

Quantifying Physical Thrombus Characteristics on Cardiovascular Biomaterials Using MicroCT

  • Avi Gupta,
  • Claire M. Johnston,
  • Monica T. Hinds and
  • Deirdre E. J. Anderson

Hemocompatibility is a critical consideration when designing cardiovascular devices. Methods of assessing hemocompatibility range from in vitro protein adsorption and static platelet attachment to in vivo implantation. A standard preclinical assessme...

  • Article
  • Open Access
1 Citations
1,634 Views
15 Pages

20 October 2025

The aim of this retrospective clinical pilot study is to evaluate multiparametric ultrasound liver parenchyma assessments in the diagnosis of Osler’s disease, and to detect micro-shunts using SRCEUS with quantifications at the capillary level....

(This article belongs to the Section Cell Biology and Tissue Engineering)
  • Review
  • Open Access
104 Citations
16,108 Views
18 Pages

21 August 2023

Minimally invasive glaucoma surgery (MIGS) has emerged as a novel approach in the glaucoma treatment spectrum, offering a range of diverse procedures and devices aimed at reducing intraocular pressure (IOP). MIGS can be broadly classified into severa...

(This article belongs to the Special Issue Recent Advances in Glaucoma: Diagnosis and Treatment)
  • Review
  • Open Access
13 Citations
14,193 Views
35 Pages

Serious vision loss occurs in patients affected by chronically raised intraocular pressure (IOP), a characteristic of many forms of glaucoma where damage to the optic nerve components causes progressive degeneration of retinal and brain neurons invol...

(This article belongs to the Special Issue New Perspectives in Ocular Pharmacology)
  • Systematic Review
  • Open Access
1 Citations
3,923 Views
25 Pages

Background: Glaucoma is the leading cause of irreversible blindness around the world and is characterized as a group of irreversible optic neuropathies with multiple risk factors such as age, race/ethnicity, sex, and intraocular pressure (IOP), among...

  • Article
  • Open Access
5 Citations
2,396 Views
12 Pages

Controllable-Dual Bridge Fault Current Limiter for Interconnection Micro-Grids

  • Hossein Shahbabaei Kartijkolaie,
  • Kuo-Hsien Hsia,
  • Saleh Mobayen,
  • Mehdi Firouzi and
  • Mohammadreza Shafiee

16 February 2021

Different types of fault current limiters (FCLs) have been developed and designed based on non-superconducting DC reactors (NSDRs). This paper proposes a controllable dual-bridge FCL (CDBFCL) based on the NSDR for use in an AC-type micro-grid. It inc...

  • Article
  • Open Access
8 Citations
5,943 Views
19 Pages

25 March 2020

Computed tomography angiography (CTA) and biochemical parameters cannot specify liver pathologies in dogs with congenital portosystemic shunts (CPSS) that are easily determined by invasive histopathology. This study aims to assess the possibility of...

  • Article
  • Open Access
3 Citations
1,954 Views
18 Pages

Design and Implementation of Reconfigurable Array Adaptive Optoelectronic Hybrid Interconnect Shunting Network

  • Bowen Yang,
  • Yong Li,
  • Chao Xi,
  • Rui Shan and ,
  • Yu Feng and
  • Jiaying Luo
  • + 1 author+ 0 author

Addressing challenges regarding Hybrid Optoelectronic Network-on-Chip systems, such as congestion control, their limited adaptability, and their inability to facilitate optoelectronic co-simulation, this study introduces an adaptive hybrid optoelectr...

(This article belongs to the Section Microwave and Wireless Communications)
  • Article
  • Open Access
9 Citations
4,634 Views
10 Pages

19 February 2019

A novel actuator toward a low voltage actuation and fast response in RF-MEMS (radio frequency micro-electro-mechanical systems) switches is reported in this paper. The switch is comprised of laterally movable triple electrodes, which are bistable by...

(This article belongs to the Special Issue Sensors and Sensing Networks Based on Smart Materials)
  • Article
  • Open Access
4 Citations
5,115 Views
18 Pages

Discussion and Demonstration of RF-MEMS Attenuators Design Concepts and Modules for Advanced Beamforming in the Beyond-5G and 6G Scenario—Part 1

  • Girolamo Tagliapietra,
  • Flavio Giacomozzi,
  • Massimiliano Michelini,
  • Romolo Marcelli and ,
  • Giovanni Maria Sardi and
  • Jacopo Iannacci
  • + 1 author+ 0 author

5 April 2024

This paper describes different variants of broadband and simple attenuator modules for beamforming applications, based on radio frequency micro electro-mechanical systems (RF-MEMS), framed within coplanar waveguide (CPW) structures. The modules propo...

(This article belongs to the Section Physical Sensors)
  • Review
  • Open Access
27 Citations
5,585 Views
25 Pages

Minimally Invasive Glaucoma Surgery: Safety of Individual Devices

  • Antonia C. Rowson,
  • Daniel T. Hogarty,
  • Dominic Maher and
  • Lei Liu

18 November 2022

Primary open-angle glaucoma progression in those already on maximal medical therapy has traditionally been treated with trabeculectomy, a surgical procedure that carries a high degree of morbidity. In the last few decades, significant advances have b...

(This article belongs to the Section Ophthalmology)
  • Article
  • Open Access
4 Citations
1,949 Views
11 Pages

26 November 2024

High-performance acoustic resonators based on single-crystalline piezoelectric thin films have great potential in wireless communication applications. This paper presents the modeling, fabrication, and characterization of laterally excited bulk reson...

  • Article
  • Open Access
17 Citations
2,650 Views
21 Pages

12 January 2022

Some of the major challenges facing micro-grids (MGs) during their connection with the utility grid are maintaining power system stability and reliability. One term that is frequently discussed in literature is the low-voltage ride-through (LVRT) cap...

(This article belongs to the Section Resources and Sustainable Utilization)
  • Review
  • Open Access
6 Citations
2,685 Views
19 Pages

Hepatic Sinusoidal Obstruction Syndrome Induced by Pyrrolizidine Alkaloids from Gynura segetum: Mechanisms and Therapeutic Advances

  • Zheng Zhou,
  • Dongfan Yang,
  • Tong Chu,
  • Dayuan Zheng and ,
  • Kuanyun Zhang,
  • Shaokui Liang,
  • Lu Yang,
  • Yanchao Yang and
  • Wenzhe Ma
  • + 4 authors+ 0 author

25 January 2026

The traditional Chinese medicinal herb Gynura segetum is increasingly recognized for its hepatotoxic potential, primarily attributed to its pyrrolizidine alkaloid (PA) content. PAs are a leading cause of herb-induced liver injury (HILI) in China and...

  • Article
  • Open Access
1,299 Views
27 Pages

This article presents a low ripple, high voltage-conversion-ratio (VCR = 6), two-stage step-up converter intended for power-burst applications. The first boost stage raises the battery voltage to a maximum of 35 V, while the subsequent low dropout re...

(This article belongs to the Section Microelectronics)