Evidence map›Paper›PMID 36498729›Full record

ArticleJournal of clinical medicine2022

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

Shigeo S M Pawiroredjo, Wichor M Bramer, Noemi D Pawiroredjo, Jan Pals, Huub J Poelman, Victor A de Vries, Roger C W Wolfs, Wishal D Ramdas

Abstract read
In one paragraph

Article in Journal of clinical medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. PreserFlo MicroShunt versus trabeculectomy: an updated meta-analysis and systematic review.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Pooled it
  2. Tube obstruction caused by blood clots following PreserFlo MicroShunt surgery.American journal of ophthalmology case reports · 2026
    Article
  3. Article
  4. Preserflo MicroShunt in refractory glaucoma: multicentre european results with up to three years of follow-up.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  5. Efficacy and safety of preserflo™ microshunt in refractory ocular hypertension with or without secondary glaucoma following pars plana vitrectomy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Observational
  6. Article
  7. Article
  8. Response to letter to the editor regarding "Prolene suture stenting: a novel approach to mitigate postoperative hypotony in PRESERFLO MicroShunt surgery".Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Shigeo S M PawiroredjoDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.
Wichor M BramerMedical Library, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.
Noemi D PawiroredjoFaculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands.
Jan PalsDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.
Huub J PoelmanDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.
Victor A de VriesDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.ORCID 0000-0002-2425-3841
Roger C W WolfsDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.
Wishal D RamdasDepartment of Ophthalmology, Erasmus Medical Center, University Medical Center, 3000 CA Rotterdam, The Netherlands.ORCID 0000-0002-1780-5281

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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 MicroShunt in patients with glaucoma and performed a meta-analysis of published results. Methods: Prospective study including all patients that underwent PRESERFLO MicroShunt surgery from 2018 onwards. Sub-analyses were performed for cataract-combined procedures. To compare our results, we performed a systematic review and meta-analysis. IOP, IOP-lowering medication and surgical complications reported in the retrieved studies were assessed. Results: A total of 72 eyes underwent PRESERFLO-implant surgery (59 as standalone procedure and 13 as cataract-combined procedure). No significant differences were found in IOP and IOP-lowering medication between both groups. The mean ± standard deviation IOP and IOP-lowering medications of both groups taken together declined from 21.72 ± 8.35 to 15.92 ± 8.54 mmHg (p < 0.001, 26.7% reduction) and 3.40 to 0.93 (p < 0.001, 72.6% reduction) at 1 year follow-up, respectively. Secondary surgeries were required in 19.4% of eyes, the majority (71.4%) within 6 months. The meta-analysis including 14 studies (totaling 1213 PRESERFLO MicroShunt surgeries) from the systematic review showed a mean preoperative IOP and IOP-lowering medication of 22.28 ± 5.38 and 2.97 ± 1.07, respectively. The three-years postoperative pooled mean was (weighted mean difference, 95% CI) 11.07 (10.27 [8.23−12.32], p < 0.001) mmHg and 0.91 (1.77 [1.26−2.28], p < 0.001) for IOP and IOP-lowering medication, respectively. The most common reported complication was hypotony (2−39%). Conclusion: The PRESERFLO MicroShunt is effective and safe in lowering IOP and the number of IOP-lowering medications.

Indexed as

ab externo surgeryglaucomaintraocular pressure (IOP)MicroShunt SIBS polymerMIGSPRESERFLO

Identifiers

PMID36498729
PMCPMC9738249

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.