Evidence map›Paper›PMID 34550218›Full record

Observational studyArquivos brasileiros de oftalmologia2021

Corneal structure and endothelial morphological changes after uneventful phacoemulsification in type 2 diabetic and nondiabetic patients.

João Nuno Beato, João Esteves-Leandro, David Reis, Manuel Falcão, Vítor Rosas, Ângela Carneiro, Fernando Falcão Reis

Open access · diamondAbstract readObservational Study
In one paragraph

Observational study in Arquivos brasileiros de oftalmologia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Observational
  4. Review
  5. Review
  6. Article
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  8. Review
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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

7 authors at 3 institutions in 2 countries.

João Nuno BeatoDepartment of Ophthalmology, São João Hospital, Porto, Portugal.ORCID 0000-0003-3820-4597
João Esteves-LeandroDepartment of Ophthalmology, São João Hospital, Porto, Portugal.
David ReisFaculty of Medicine, University of Porto, Porto, Portugal.
Manuel FalcãoDepartment of Ophthalmology, São João Hospital, Porto, Portugal.
Vítor RosasDepartment of Ophthalmology, São João Hospital, Porto, Portugal.
Ângela CarneiroDepartment of Ophthalmology, São João Hospital, Porto, Portugal.
Fernando Falcão ReisDepartment of Ophthalmology, São João Hospital, Porto, Portugal.
Associazione Italiana Sclerosi Multipla · ITHospital de São João · PTUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to compare corneal structure and endothelial morphological changes after uneventful phacoemulsification cataract surgery between type 2 diabetic and nondiabetic patients and to determine the preoperative and intraoperative factors that may predict greater endothelial cell density loss.

methodsForty-five diabetic pa-tients (45 eyes) and 43 controls (43 eyes) with age-related cataract were enrolled in this prospective observational study. Corneal (thickness and volume) and anterior segment parameters were measured by Scheimpflug tomography; endothelial cell density and morphology (coefficient of variation of cell size, hexagonal cells) were recorded using noncontact specular microscopy. Patients were evaluated preoperatively and at one and six months after surgery. Univariate and multivariate linear regression analyses were performed to evaluate the relationship between demographic, clinical, ocular, and intraoperative parameters and postoperative endothelial cell density changes at six months.

resultsSignificant postoperative endothelial cell loss occurred one month after surgery in both groups (p<0.001), which remained stable until month 6; there were no differences between patients with and without diabetes mellitus at any time point. The mean postoperative central corneal thickness at one and six months did not change significantly from the mean preoperative value in either group (p>0.05). Multivariate linear regression analysis showed that older age (p=0.042) and higher cataract grades (p=0.001) were significantly associated with greater endothelial cell density reduction at six-month follow-up.

conclusionThis study showed that older age and denser cataracts might be associated with greater endothelial cell density reduction after cataract surgery. Other factors, such as diabetes mellitus and preoperative anterior segment parameters, did not influence postoperative changes in endothelial cell density.

Indexed as

CataractDiabetes Mellitus, Type 2PhacoemulsificationAgedCell CountCorneaEndothelium, CornealHumansProspective Studies

Identifiers

PMID34550218
PMCPMC11878423
OpenAlexW3195835572

What OpenQuestion holds

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Registered trials

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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.