Evidence map›Paper›PMID 34427250›Full record

ArticleIndian journal of ophthalmology2021

iStent versus iStent inject implantation combined with phacoemulsification in open angle glaucoma.

Wesam Shamseldin Shalaby, Sophia S Lam, Amirmohsen Arbabi, Jonathan S Myers, Marlene R Moster, Natasha N Kolomeyer, Reza Razeghinejad, Aakriti Garg Shukla, Tarek R Hussein, Tarek M Eid and 2 more

Abstract read
In one paragraph

Article in Indian journal of ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Clinical outcomes of combined cataract surgery with iStent injectGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  8. Visual Function After Schlemm's Canal-Based MIGS.Journal of clinical medicine · 2025
    Review
  9. Article
  10. Review
  11. Two-Year Post-Market Surveillance of iStentClinical ophthalmology (Auckland, N.Z.) · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Comparison of the iStent InjectJournal of clinical medicine · 2023
    Article
  16. Review
  17. Review
  18. The PreserFlo MicroShunt in the Context of Minimally Invasive Glaucoma Surgery: A Narrative Review.International journal of environmental research and public health · 2023
    Review
  19. Review
  20. Review
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

12 authors.

Wesam Shamseldin ShalabyGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA; Tanta Medical School, Tanta University, Tanta, Gharbia, Egypt.
Sophia S LamSidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Amirmohsen ArbabiGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Jonathan S MyersGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Marlene R MosterGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Natasha N KolomeyerGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Reza RazeghinejadGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Aakriti Garg ShuklaGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Tarek R HusseinTanta Medical School, Tanta University, Tanta, Gharbia, Egypt.
Tarek M EidTanta Medical School, Tanta University, Tanta, Gharbia, Egypt.
Said M ShalabyTanta Medical School, Tanta University, Tanta, Gharbia, Egypt.
Daniel LeeGlaucoma Research Center, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the outcomes of iStent vs. iStent inject implantation combined with phacoemulsification.

methodsThis single center retrospective comparative case series included subjects with open angle glaucoma who underwent iStent or iStent inject implantation combined with phacoemulsification with ≥1 year follow-up. The main outcome measures were in-group and between-group changes in intraocular pressure (IOP) and medication number, proportion of eyes that achieved IOP ≤15 mmHg, and surgical success defined as 20% IOP reduction from baseline at 6/12 months. Univariate/multivariate regression analyses were done to identify predictors of surgical failure.

resultsOne hundred ninety-seven eyes of 148 patients were included (122 iStent, 75 iStent inject). Both groups achieved significant IOP and medication reduction at months 6/12 (P < 0.05). At month 6, IOP was significantly lower in iStent inject vs. iStent eyes (P = 0.003), but the difference was insignificant by month 12 (P = 0.172). Medication number was comparable in both groups at months 6/12 (P > 0.05). More iStent inject eyes achieved IOP ≤15 mmHg at month 6 (P = 0.003) and 12 (P = 0.047). Surgical success was comparable in both groups at months 6/12 (P > 0.05). Kaplan-Meier survival analysis showed similar cumulative rate of surgical failure at year-1 in both groups (P = 0.644). The multivariate model identified older age (P = 0.017) and lower baseline IOP (P = 0.002) as the strongest predictors of surgical failure.

conclusionCompared to iStent, iStent inject achieved lower IOP at month 6 and higher proportion of eyes achieved IOP ≤15 mmHg at month 6/12. However, surgical success was similar in both groups. Predictors of surgical failure were older age and lower baseline IOP rather than the stent type.

Indexed as

Glaucoma Drainage ImplantsGlaucoma, Open-AnglePhacoemulsificationAgedHumansRetrospective StudiesTonometry, OculariStentiStent injectminimally invasive glaucoma surgeryopen angle glaucomaphacoemulsificationtrabecular microbypass stent

Identifiers

PMID34427250
PMCPMC8544096

What OpenQuestion holds

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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.