Evidence map›Paper›PMID 40434721›Full record

SynthesisGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2025

The Paul Glaucoma Implant: a systematic review of safety, efficacy, and emerging applications.

Matteo Mario Carlà, Gloria Gambini, Francesco Boselli, Lorenzo Hu, Agnese Maria Perugini, Emanuele Crincoli, Fiammetta Catania, Laura De Luca, Stanislao Rizzo

Abstract readSystematic Review
In one paragraph

Synthesis in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Reply to "Diplopia following PAUL implantation in the superotemporal quadrant - an underrecognized but severe complication".Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  7. Article
  8. 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

9 authors.

Matteo Mario CarlàOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy. mm.carla94@gmail.com.ORCID http://orcid.org/0000-0003-2979-1638
Gloria GambiniOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.
Francesco BoselliOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.
Lorenzo HuOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.
Agnese Maria PeruginiOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.
Emanuele CrincoliOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.
Fiammetta CataniaDepartment of Ophthalmology, Hopital Fondation Adolphe De Rothschild, Paris, France.
Laura De LucaOphthalmology Clinic, Department of Biomedical Sciences, University of Messina, Messina, Italy.
Stanislao RizzoOphthalmology Department, "Fondazione Policlinico Universitario A. Gemelli, IRCCS", 00168, Rome, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe Paul Glaucoma Implant (PGI) is a novel non-valved glaucoma drainage device designed to lower intraocular pressure (IOP) in patients with refractory glaucoma. This systematic review aims to evaluate the current evidence on safety, efficacy, and emerging applications of PGI implantation.

methodsA systematic literature search was conducted following PRISMA guidelines across PubMed/Medline, Embase, Cochrane, Google Scholar, and Web of Science databases up to April 2025. Quality assessment was performed using the NIH Quality Assessment Tool for Before-After Studies. Data on patient demographics, surgical techniques, IOP outcomes, success rates, and complications were extracted and analyzed.

resultsEighteen studies (946 eyes) met the inclusion criteria. The PGI consistently demonstrated significant IOP reduction across various studies and glaucoma subtypes. Mean IOP reductions ranged from 14.8 mmHg to 19.1 mmHg, depending on follow-up duration and patient characteristics. Complete success rates ranged from 38.4% to 75%, while qualified success rates were consistently high, reaching up to 93.2%. The PGI's unique design, featuring a smaller inner tube diameter (0.127 mm), is thought to contribute to a lower risk of hypotony compared to other non-valved implants. Three comparative studies with other GDDs reported similar success rates with potentially fewer early complications. Quality assessment revealed moderate-to-good quality evidence, with limitations including short follow-up periods and predominance of uncontrolled studies.

conclusionsThe PGI is emerging as a safe and effective surgical option for treating refractory glaucoma. Its smaller tube diameter and large surface area endplate contribute to efficient IOP control with a potentially lower risk of hypotony.

Indexed as

GlaucomaGlaucoma Drainage ImplantsIntraocular PressureHumansProsthesis DesignTreatment OutcomeGlaucoma draining deviceHypotonyPaul glaucoma implantPGITube erosion

Identifiers

PMID40434721
PMCPMC12513900

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.