Evidence map›Paper›PMID 35277663›Full record

ArticleEye (London, England)2023

Short-term safety and efficacy of Preserflo™ Microshunt in glaucoma patients: a multicentre retrospective cohort study.

Raj Bhayani, Jose Maria Martínez de la Casa, Michele Figus, Karsten Klabe, Alessandro Rabiolo, Karl Mercieca

Abstract readMulticenter StudyComment
In one paragraph

Article in Eye (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Review
  8. Article
  9. Management practices and surgical techniques for ab externo less invasive glaucoma surgery: a literature review and expert recommendations.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Review
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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 · 2024
    Observational
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Raj BhayaniManchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester, UK.ORCID 0000-0003-2003-5895
Jose Maria Martínez de la CasaOphthalmology Unit, Department of Ophthalmology and ORL, Faculty of Medicine, Hospital Clinico San-Carlos, Universidad Complutense de Madrid, Instituto de Investigacion Sanitaria del Hospital Clinico San-Carlos (IdISSC), Madrid, Spain.
Michele FigusDepartment of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy.
Karsten KlabeBreyer-Kaymak-Klabe Augenchirurgie, Duesseldorf, Germany.
Alessandro Rabiolo *Department of Ophthalmology, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, UK.
Karl Mercieca *University Hospitals Eye Clinic, Ernst-Abbe Strasse 2, Bonn, Germany. karl.mercieca@ukbonn.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsTo evaluate 1-year success rates and safety profile of Preserflo™ Microshunt in glaucoma patients.

methodsRetrospective multicentre cohort study of 100 consecutive eyes (91 patients) from four tertiary-referral glaucoma centres. Four intraocular pressure (IOP) criteria were defined: A: IOP ≤ 21 mmHg+IOP reduction ≥20% from baseline; B: IOP ≤ 18 mmHg+IOP reduction ≥20%; C: IOP ≤ 15 mmHg+IOP reduction ≥25%; D: IOP≤12 mmHg+IOP reduction ≥30%. Success was defined as qualified or complete based on whether reached with or without medication. Primary outcome was success according to the above criteria. Secondary outcomes included: IOP, best-corrected visual acuity (BCVA), medication use, complications, postoperative interventions, and failure-associated factors.

resultsQualified and complete success rates (95% CI) at 12 months were 74%(66-83%) and 58%(49-69%) for criterion A, 72%(63-82%) and 57%(48-68%) for B, 52%(43-63%) and 47%(38-58%) for C, 29%(21-40%) and 26%(19-36%) for D. Overall median (interquartile range (IQR)) preoperative IOP decreased from 21.5(19-28) mmHg to 13(11-16) mmHg at 12 months. BCVA was not significantly different up to 12 months (p = 0.79). Preoperative median (IQR) number of medications decreased from 3 (2-3) to 0 (0-1) at 12 months. Twelve eyes underwent needling, five surgical revision and one device removal due to corneal oedema. There were no hypotony-related complications. Non-Caucasian ethnicity was the only risk factor consistently associated with increased failure.

conclusionsPreserflo™ Microshunt is a viable surgical option in glaucoma patients, with reasonable short-term success rates, decreased medications use, excellent safety profile, smooth postoperative care, and rapid learning curve. Success rates for the most stringent IOP cutoffs were modest, indicating that it may not be the optimal surgery when very low target IOP is required.

Indexed as

GlaucomaOcular HypotensionTrabeculectomyCohort StudiesFollow-Up StudiesHumansIntraocular PressureRetrospective StudiesTreatment Outcome

Identifiers

PMID35277663
PMCPMC8916945

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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.