Evidence map›Paper›PMID 31119690›Full record

ArticleAdvances in therapy2019

Second-Generation Trabecular Micro-Bypass Stents as Standalone Treatment for Glaucoma: A 36-Month Prospective Study.

Fritz H Hengerer, Gerd U Auffarth, Christoffer Riffel, Ina Conrad-Hengerer

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in Advances in therapy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04092400 (Prospective Observational Study of Patients Implanted With Micro-invasive Glaucoma Surgical), which is not on this map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
10.9field-weighted citation impact, top 1% of its field
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.

NCT04092400 unknown statusnot on this map

Prospective Observational Study of Patients Implanted With Micro-invasive Glaucoma Surgical (MIGS) Devices at the National University Hospital, Singapore

TypeobservationalSponsorNational University Hospital, SingaporeRan2016 to 2020Enrolled500ConditionsGlaucomaArmsMicro-invasive Glaucoma Surgical Devices
3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 77 citations in OpenAlex.

  1. Minimally Invasive Glaucoma Surgery: Where Is the Evidence?Asia-Pacific journal of ophthalmology (Philadelphia, Pa.)
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Visual Function After Schlemm's Canal-Based MIGS.Journal of clinical medicine · 2025
    Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. iStent for Adults With Glaucoma: A Health Technology Assessment.Ontario health technology assessment series · 2021
    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

4 authors at 2 institutions in 1 country.

Fritz H HengererUniversity Eye Hospital, University of Heidelberg, Heidelberg, Germany. f.hengerer@buergerhospital-ffm.de.
Gerd U AuffarthUniversity Eye Hospital, University of Heidelberg, Heidelberg, Germany.
Christoffer RiffelUniversity Eye Hospital, University of Heidelberg, Heidelberg, Germany.
Ina Conrad-HengererUniversity Eye Hospital, University of Heidelberg, Heidelberg, Germany.
Heidelberg University · DEUniversity Hospital Heidelberg · DE

Funding

Glaukos Corporation editorial assistance.Glaukos Corporation Publishing fees
6 · The paper itself

Abstract

introductionTo evaluate long-term outcomes following stand-alone implantation of two second-generation trabecular micro-bypass stents (iStent inject

methodsEyes with POAG, pseudoexfoliative glaucoma (PXG), appositional narrow-angle glaucoma (NAG, with open-angle configuration in the area of implantation), or secondary glaucoma were included in this prospective, non-randomized, consecutive case series. All eyes underwent ab interno iStent inject implantation as a sole procedure. Assessments through 36 months included IOP, medications, corrected distance visual acuity (CDVA), secondary glaucoma surgeries, and complications and adverse events.

resultsTwo iStent inject stents were implanted in 44 consecutive eyes (POAG = 38, PXG = 4, appositional NAG = 1, secondary neovascular glaucoma = 1) of 31 patients, and 33 eyes had 36-month follow-up data. Preoperative mean IOP was 25.3 ± 6.0 mmHg on a mean of 2.98 ± 0.88 medications, with 75% of eyes on 3-5 medications, no eyes medication-free, and 50% of eyes with history of prior glaucoma surgery. At 36 months postoperatively, mean IOP reduced by 42% to 14.6 ± 2.0 mmHg (p < 0.0001) and 87.9% of eyes achieved an IOP reduction of ≥ 20% versus preoperatively. In addition, 97% of eyes reached IOP ≤ 18 mmHg (vs. 9.1% preoperatively; p < 0.0001) and 70.0% of eyes reached IOP ≤ 15 mmHg (vs. 2.3% preoperatively; p < 0.0001). Mean medication burden decreased by 82% to 0.55 ± 0.79 (p < 0.0001), and 61% of eyes became medication-free. All eyes maintained or decreased their 36-month medication burden versus preoperatively. Safety was favorable, including minimal adverse events and stable CDVA through 36 months postoperatively.

conclusionThis real-world cohort of glaucomatous eyes with substantial preoperative disease burden experienced significant, sustained, safe IOP and medication reductions through 36 months following stand-alone iStent inject implantation.

fundingArticle processing charges and writing assistance were provided by Glaukos Corp. (San Clemente, CA, USA).

Indexed as

Postoperative ComplicationsProsthesis ImplantationStentsCohort StudiesFemaleGlaucoma, Open-AngleHumansIntraocular PressureMaleMiddle AgedOphthalmologic Surgical ProceduresOutcome Assessment, Health CareProspective StudiesVisual AcuityGlaucomaIntraocular pressureIStent injectMedicationMicroinvasive glaucoma surgery (MIGS)Second generationStand aloneStentTrabecular

Identifiers

PMID31119690
PMCPMC6824385
OpenAlexW2946723174

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.