Evidence map›Paper›PMID 33642854›Full record

ArticleClinical ophthalmology (Auckland, N.Z.)2021

The Role of Corneal Biomechanics in the Assessment of Ectasia Susceptibility Before Laser Vision Correction.

Pedro Manuel Baptista, Ana Ambrósio Marta, João Heitor Marques, Ana Carolina Abreu, Sílvia Monteiro, Pedro Menéres, Maria do Céu Pinto

Abstract read
In one paragraph

Article in Clinical ophthalmology (Auckland, N.Z.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
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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.

Pedro Manuel BaptistaOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0001-8285-1084
Ana Ambrósio MartaOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0003-3495-4649
João Heitor MarquesOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0001-6487-7950
Ana Carolina AbreuOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0003-4842-8623
Sílvia MonteiroOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0001-5040-6170
Pedro MenéresOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.ORCID 0000-0002-1989-3465
Maria do Céu PintoOphthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo describe the tomographic and corneal biomechanical status of a sample of eyes excluded from LVC and to present the differences in biomechanical behavior in relation to cutoffs of clinical- and tomography-based screening methods used in clinical practice. PATIENTS AND

methodsObservational cross-sectional study including 61 eyes from 32 consecutive patients who were excluded from LVC in our department. Clinical and demographic data were collected from the patients' clinical records. Tomographic data was assessed with a Scheimpflug camera (Pentacam, OCULUS

resultsMean age was 31.0±6 years old and mean manifest spherical equivalent was -2.01 ± 2.3D. Belin-Ambrósio deviation index was the tomographic parameter with higher proportion of eyes within the ectasia high risk interval. In the biomechanical assessment, more than 95% of eyes met the criteria for ectasia susceptibility in four of the first generation and in two of the second generation parameters. In a cutoff based comparative analysis, eyes with Kmax ≥45.5 D, eyes with VCOMA <0 and eyes with ARTmax ≤350 presented significantly softer corneal biomechanical behavior.

conclusionThe majority of eyes excluded from LVC in the present study met the criteria for ectasia susceptibility in several biomechanical parameters, validating the clinical and tomographic based screening prior to LVC in our center. Differences found in the biomechanical assessment regarding cutoffs used in clinical practice highlight its differential role in characterizing risk profile of these patients. Tomography should not be overlooked and the integration of all data, including treatment-related parameters, can be the future of risk ectasia screening prior LVC.

Indexed as

corneal biomechanicsCorvisectasiakeratorefractive surgerytomographyultra-high speed Scheimpflug camera

Identifiers

PMID33642854
PMCPMC7903962

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