Evidence map›Paper›PMID 36548532›Full record

ArticleTomography (Ann Arbor, Mich.)2022

Evaluation of Anterior and Posterior Corneal Higher Order Aberrations for the Detection of Keratoconus and Suspect Keratoconus.

Abdelrahman Salman, Obeda Kailani, John Marshall, Marwan Ghabra, Ashraf Armia Balamoun, Taym R Darwish, Abdul Aziz Badla, Hala Alhaji

Open access · goldAbstract read
In one paragraph

Article in Tomography (Ann Arbor, Mich.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

8 citing papers in PubMed, 13 citations in OpenAlex.

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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

8 authors at 4 institutions in 2 countries.

Abdelrahman SalmanDepartment of Ophthalmology, Tishreen University, Latakia P.O. Box 25, Syria.ORCID 0000-0002-1042-8153
Obeda KailaniKing's College Hospital NHS Foundation Trust, London SE5 9RS, UK.ORCID 0000-0002-6623-1720
John MarshallInstitute of Ophthalmology, University College London in Association with Moorfield Eye Hospital, London WC1E 6BT, UK.
Marwan GhabraWhipps Cross University Hospital, Leytonstone, London E11 1NR, UK.
Ashraf Armia BalamounWatany Research and Development Centre, Cairo 11775, Egypt.ORCID 0000-0003-0679-9688
Taym R DarwishDepartment of Ophthalmology, Tishreen University, Latakia P.O. Box 25, Syria.
Abdul Aziz BadlaDepartment of Ophthalmology, Suliman Al-Habib Hospital, Dubai 41516, United Arab Emirates.
Hala AlhajiDepartment of Ophthalmology, Tishreen University, Latakia P.O. Box 25, Syria.
Latakia University · SYKing's College Hospital NHS Foundation Trust · GBMoorfields Eye Hospital NHS Foundation Trust · GBWhipps Cross University Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate the application of anterior and posterior corneal higher-order aberrations (HOAs) in detecting keratoconus (KC) and suspect keratoconus (SKC).

methodA retrospective, case-control study evaluating non-ectatic (normal) eyes, SKC eyes, and KC eyes. The Sirius Scheimpfug (CSO, Italy) analyses was used to measure HOAs of the anterior and posterior corneal surfaces. Sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) were calculated.

resultsTwo-hundred and twenty eyes were included in the analysis (normal n = 108, SKC n = 42, KC n = 70). Receiver operating characteristic (ROC) curve analysis revealed a high predictive ability for anterior corneal HOAs parameters: the root mean square (RMS) total corneal HOAs, RMS trefoil, and RMS coma to detect keratoconus (AUC > 0.9 for all). RMS Coma (3, ±1) derived from the anterior corneal surface was the parameter with the highest ability to discriminate between suspect keratoconus and normal eyes (AUC = 0.922; cut-off > 0.2). All posterior corneal HOAs parameters were unsatisfactory in discriminating between SKC and normal eyes (AUC < 0.8 for all). However, their ability to detect KC was excellent with AUC of >0.9 for all except RMS spherical aberrations (AUC = 0.846).

conclusionsAnterior and posterior corneal higher-order aberrations can differentiate between keratoconus and normal eyes, with a high level of certainty. In suspect keratoconus disease, however, only anterior corneal HOAs, and in particular coma-like aberrations, are of value. Corneal aberrometry may be of value in screening for keratoconus in populations with a high prevalence of the disease.

Indexed as

KeratoconusCase-Control StudiesComaCorneal TopographyHumansRetrospective Studieshigher-order aberrationskeratoconus suspectScheimpflugsensitivitySirius topography

Identifiers

PMID36548532
PMCPMC9782471
OpenAlexW4312196577

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.