Evidence map›Paper›PMID 39382129›Full record

ArticleClinical & experimental ophthalmology

Prediction of refraction error after toric lens implantation with biometric input data uncertainties and power labelling tolerances.

Achim Langenbucher, Nóra Szentmáry, Alan Cayless, David Cooke, Peter Hoffmann, Jascha Wendelstein

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In one paragraph

Article in Clinical & experimental ophthalmology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Residual Astigmatism With Toric Versus Light-Adjustable Intraocular Lenses: A Power-Vector Model of the Effect of Alignment Uncertainty.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Achim LangenbucherDepartment of Experimental Ophthalmology, Saarland University, Saarbrücken, Germany.ORCID 0000-0001-9175-6177
Nóra SzentmáryDr. Rolf M. Schwiete Center for Limbal Stem Cell and Aniridia Research, Saarland University, Saarbrücken, Germany.
Alan CaylessSchool of Physical Sciences, The Open University, Milton Keynes, UK.
David CookeGreat Lakes Eye Care, Saint Joseph, Michigan, USA.
Peter HoffmannAugen- und Laserklinik Castrop-Rauxel, Castrop-Rauxel, Germany.
Jascha WendelsteinDepartment of Experimental Ophthalmology, Saarland University, Saarbrücken, Germany.ORCID 0000-0003-4145-2559

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to simulate the impact of biometric measure uncertainties, lens equivalent and toric power labelling tolerances and axis alignment errors on the refractive outcome after cataract surgery with toric lens implantation.

methodsIn this retrospective non-randomised cross sectional Monte-Carlo simulation study we evaluated a dataset containing 7458 LenStar 900 preoperative biometric measurements. The biometric uncertainties from literature, lens power labelling according to ISO 11979, and axis alignment tolerances of a modern toric lens (Hoya Vivinex) were taken to be normally distributed and used in a Monte-Carlo simulation with 100 000 samples per eye. The target variable was the defocus equivalent (DEQ) derived using the Castrop (DEQ

resultsMean/median / 90% quantile DEQ

conclusionsAccording to our simulation results, uncertainties in biometric measures, lens power labelling tolerances, and axis alignment errors are responsible for a significant part of the refraction prediction error after cataract surgery with toric lens implantation. Additional labelling of the exact equivalent and toric power on the lens package could be a step to improve postoperative results.

Indexed as

BiometryLenses, IntraocularLens Implantation, IntraocularPhacoemulsificationRefraction, OcularRefractive ErrorsComputer SimulationCross-Sectional StudiesHumansMonte Carlo MethodOptics and PhotonicsRetrospective StudiesUncertaintyVisual Acuitybiometric measure uncertaintieslens power labelling tolerancesMonte‐Carlo simulationrefractive outcome predictiontoric lenses

Identifiers

PMID39382129
PMCPMC11790419

What Socratic holds

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LicenceCC BY
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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 Socratic graph.