Evidence map›Paper›PMID 31996998›Full record

ArticleDer Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft2020

[Treatment success of canaloplasty and trabeculectomy by the same surgeon with the same level of experience in the long-term course].

Lina Nassri, Niklas Plange, Friederike Lindemann, Hannah Schellhase, Peter Walter, David Kuerten

Abstract read
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In one paragraph

Article in Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.8field-weighted citation impact, top 29% 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.

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

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Factors influencing the outcomes of trabeculectomy, conventional canaloplasty, and mitomycin C augmented canaloplasty.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Is canaloplasty with mitomycin c a safe procedure in myopic glaucoma?Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
    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

6 authors at 1 institution in 1 country.

Lina NassriKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland. lnassri@ukaachen.de.ORCID http://orcid.org/0000-0002-0910-4530
Niklas PlangeKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
Friederike LindemannKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
Hannah SchellhaseKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
Peter WalterKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
David KuertenKlinik für Augenheilkunde, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
Universitätsklinikum Aachen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTrabeculectomy (TE) with the use of antimetabolites is the standard procedure in glaucoma surgery, whereas canaloplasty (CP) is a nonpenetrating and potentially less invasive alternative.

objectiveThe aim of this retrospective case series was to compare the long-term success of CP and TE under the same conditions and with the same levels of experience of the surgeon as well as to investigate whether preoperative intraocular pressure (IOP) and postoperative IOP correlate with eachother.

methodsThe study included 57 eyes that underwent either CP or TE (CP n = 27; male = 50.0% age 60.7 ± 13.2 years; TE n = 30; male = 55.6% age 68.0 ± 9.1 years). Each of the procedures was performed by the same surgeon with comparable levels of experience. The comparison included preoperative and postoperative visual field damage, preoperative and postoperative IOP (mm Hg) after 1 and 6 weeks, 6 and 12 months as well as in the long-term course (1-3 years) and the necessary local treatment at the corresponding times.

resultsWith both methods no worsening of the visual field could be detected and the patient groups showed comparable preoperative and postoperative mean deviations (MD). The CP showed a positive correlation between preoperative and postoperative 1‑year IOP (r = 0.4; p = 0.022), whereas TE showed no significant correlation between preoperative and postoperative IOP. The count of local antiglaucoma medication in long-term comparison (1-3 years after surgery) was higher after CP than after TE (1.5 ± 1.6 vs. 0.5 ± 0.8; p = 0.003). In both groups there were no severe postoperative complications. The overall success rates (without treatment) were higher at all time points after TE. DISCUSSION: With both methods conducted by the same surgeon with the same levels of experience, an effective reduction of the IOP was achieved. It seems that the higher the preoperative IOP before CP, the higher the achievable pressure after 1 year and in the long term. In contrast, after TE the IOP was effectively reduced in the long term regardless of the initial IOP. The CP seems to be inferior to TE under the same conditions with respect to complete surgical success (without local treatment).

Indexed as

SurgeonsTrabeculectomyHumansIntraocular PressureRetrospective StudiesTreatment OutcomeVisual AcuityCanaloplastyGlaucoma surgeryLongterm outcomeOne surgeonTrabeculectomy

Identifiers

PMID31996998
OpenAlexW3003886315

What OpenQuestion holds

Textmetadata
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.