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Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus

BACKGROUND: To investigate whether the repeatability of measurements with the Pentacam HR in patients with keratoconus is improved by patients gaining more experience of the measurement situation. Such an improvement could enhance the accuracy with which progressive keratoconus can be detected. METH...

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Autores principales: Gustafsson, Ingemar, Bizios, Dimitrios, Ivarsen, Anders, Hjortdal, Jesper Ø
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10165742/
https://www.ncbi.nlm.nih.gov/pubmed/37150816
http://dx.doi.org/10.1186/s12886-023-02930-4
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author Gustafsson, Ingemar
Bizios, Dimitrios
Ivarsen, Anders
Hjortdal, Jesper Ø
author_facet Gustafsson, Ingemar
Bizios, Dimitrios
Ivarsen, Anders
Hjortdal, Jesper Ø
author_sort Gustafsson, Ingemar
collection PubMed
description BACKGROUND: To investigate whether the repeatability of measurements with the Pentacam HR in patients with keratoconus is improved by patients gaining more experience of the measurement situation. Such an improvement could enhance the accuracy with which progressive keratoconus can be detected. METHODS: Four replicate measurements were performed on Day 0 and on Day 3. Parameters commonly used in the diagnosis of progressive keratoconus were included in the analysis, namely the flattest central keratometry value (K1), the steepest central keratometry value (K2), the maximum keratometry value (Kmax), and the parameters A, B and C from the Belin ABCD Progression Display. In addition, quality parameters used by the Pentacam HR to assess the quality of the measurements were included, namely the analysed area (front + back), 3D (front + back), XY, Z, and eye movements. RESULTS: Neither the diagnostic parameters nor the quality parameters showed any statistically significant improvement on Day 3 compared to Day 0. The quality parameter “eye movements” deteriorated significantly with increasing Kmax. CONCLUSION: Gaining experience of the measurement situation did not increase the accuracy of the measurements. Further investigations should be performed to determine whether the increasing number of eye movements with increasing disease severity has a negative effect on the repeatability of the measurements. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12886-023-02930-4.
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spelling pubmed-101657422023-05-09 Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus Gustafsson, Ingemar Bizios, Dimitrios Ivarsen, Anders Hjortdal, Jesper Ø BMC Ophthalmol Research BACKGROUND: To investigate whether the repeatability of measurements with the Pentacam HR in patients with keratoconus is improved by patients gaining more experience of the measurement situation. Such an improvement could enhance the accuracy with which progressive keratoconus can be detected. METHODS: Four replicate measurements were performed on Day 0 and on Day 3. Parameters commonly used in the diagnosis of progressive keratoconus were included in the analysis, namely the flattest central keratometry value (K1), the steepest central keratometry value (K2), the maximum keratometry value (Kmax), and the parameters A, B and C from the Belin ABCD Progression Display. In addition, quality parameters used by the Pentacam HR to assess the quality of the measurements were included, namely the analysed area (front + back), 3D (front + back), XY, Z, and eye movements. RESULTS: Neither the diagnostic parameters nor the quality parameters showed any statistically significant improvement on Day 3 compared to Day 0. The quality parameter “eye movements” deteriorated significantly with increasing Kmax. CONCLUSION: Gaining experience of the measurement situation did not increase the accuracy of the measurements. Further investigations should be performed to determine whether the increasing number of eye movements with increasing disease severity has a negative effect on the repeatability of the measurements. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12886-023-02930-4. BioMed Central 2023-05-08 /pmc/articles/PMC10165742/ /pubmed/37150816 http://dx.doi.org/10.1186/s12886-023-02930-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Gustafsson, Ingemar
Bizios, Dimitrios
Ivarsen, Anders
Hjortdal, Jesper Ø
Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title_full Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title_fullStr Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title_full_unstemmed Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title_short Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus
title_sort patient experience and repeatability of measurements made with the pentacam hr in patients with keratoconus
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10165742/
https://www.ncbi.nlm.nih.gov/pubmed/37150816
http://dx.doi.org/10.1186/s12886-023-02930-4
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