Please use this identifier to cite or link to this item: doi:10.22028/D291-41812
Title: Repeatability of biometric measures from the IOLMaster 700 in a cataractous population
Author(s): Langenbucher, Achim
Szentmáry, Nóra
Cayless, Alan
Hoffmann, Peter
Wendelstein, Jascha
Cooke, David
Language: English
Title: PLOS ONE
Volume: 19
Issue: 2
Publisher/Platform: PLOS
Year of Publication: 2024
DDC notations: 610 Medicine and health
Publikation type: Journal Article
Abstract: Purpose The purpose of this study was to investigate the repeatability of biometric measures and also to assess the interactions between the uncertainties in these measures for use in an error propagation model, using data from a large patient cohort. Methods In this cross-sectional non-randomised study we evaluated a dataset containing 3379 IOLMaster 700 biometric measurements taken prior to cataract surgery. Only complete scans with at least 3 successful measurements for each eye performed on the same day were considered. The mean (Mean) and standard deviations (SD) for each sequence of measurements were derived and analysed. Correlations between the uncertainties were assessed using Spearman rank correlations. Results In the dataset with 677 eyes matching the inclusion criteria, the within subject standard deviation and repeatability for all parameters match previously published data. The SD of the axial length (AL) increased with the Mean AL, but there was no noticeable dependency of the SD of any of the other parameters on their corresponding Mean value. The SDs of the parameters are not independent of one another, and in particular we observe correlations between those for AL, anterior chamber depth, aqueous depth, lens thickness and corneal thickness. Conclusions The SD change over Mean for AL measurement and the correlations between the uncertainties of several biometric parameters mean that a simple Gaussian error propagation model cannot be used to derive the effect of biometric uncertainties on the predicted intraocular lens power and refraction after cataract surgery.
DOI of the first publication: 10.1371/journal.pone.0297869
URL of the first publication: https://doi.org/10.1371/journal.pone.0297869
Link to this record: urn:nbn:de:bsz:291--ds-418123
hdl:20.500.11880/37404
http://dx.doi.org/10.22028/D291-41812
ISSN: 1932-6203
Date of registration: 27-Mar-2024
Faculty: M - Medizinische Fakultät
Department: M - Augenheilkunde
Professorship: M - Univ.-Prof. Dr. Dipl.-Ing. Achim Langenbucher
M - Prof. Dr. med. Nóra Szentmáry
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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