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Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer

PURPOSE: To compare measurements of anterior and posterior keratometric values, using a color light-emitting diode corneal topographer and a dual rotating Scheimpflug–Placido topographer. METHODS: Anterior and posterior corneal index measurements were performed using a color light-emitting diode cor...

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Autores principales: Lee, Jae Hyuck, Lee, Yong Woo, Lee, Jong Soo, Knorz, Michael C., Auffarth, Gerd U., Choi, Chul Young
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6327256/
https://www.ncbi.nlm.nih.gov/pubmed/30687546
http://dx.doi.org/10.1155/2018/6764805
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author Lee, Jae Hyuck
Lee, Yong Woo
Lee, Jong Soo
Knorz, Michael C.
Auffarth, Gerd U.
Choi, Chul Young
author_facet Lee, Jae Hyuck
Lee, Yong Woo
Lee, Jong Soo
Knorz, Michael C.
Auffarth, Gerd U.
Choi, Chul Young
author_sort Lee, Jae Hyuck
collection PubMed
description PURPOSE: To compare measurements of anterior and posterior keratometric values, using a color light-emitting diode corneal topographer and a dual rotating Scheimpflug–Placido topographer. METHODS: Anterior and posterior corneal index measurements were performed using a color light-emitting diode corneal topographer (Cassini) and a dual rotating Scheimpflug–Placido topographer (Galilei G4) and then compared. The paired t-test, intraclass correlation coefficients (ICCs), and Bland–Altman plots were used to evaluate the agreement between measurements. RESULTS: Sixty postrefractive surgery eyes and 60 normal eyes were evaluated. Both the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer provided highly repeatable corneal measurements (ICC > 0.969). The agreement levels between the 2 devices for anterior corneal power, astigmatism magnitude, and J0 and J45 values were ICC > 0.906 for the total group. However, the ICC values for posterior corneal power, astigmatism magnitude, and J0 and J45 values were lower than 0.681 for the total group. CONCLUSIONS: The anterior keratometric values obtained by the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer showed high agreement levels, but the posterior keratometric values showed lower agreement levels.
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spelling pubmed-63272562019-01-27 Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer Lee, Jae Hyuck Lee, Yong Woo Lee, Jong Soo Knorz, Michael C. Auffarth, Gerd U. Choi, Chul Young J Ophthalmol Research Article PURPOSE: To compare measurements of anterior and posterior keratometric values, using a color light-emitting diode corneal topographer and a dual rotating Scheimpflug–Placido topographer. METHODS: Anterior and posterior corneal index measurements were performed using a color light-emitting diode corneal topographer (Cassini) and a dual rotating Scheimpflug–Placido topographer (Galilei G4) and then compared. The paired t-test, intraclass correlation coefficients (ICCs), and Bland–Altman plots were used to evaluate the agreement between measurements. RESULTS: Sixty postrefractive surgery eyes and 60 normal eyes were evaluated. Both the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer provided highly repeatable corneal measurements (ICC > 0.969). The agreement levels between the 2 devices for anterior corneal power, astigmatism magnitude, and J0 and J45 values were ICC > 0.906 for the total group. However, the ICC values for posterior corneal power, astigmatism magnitude, and J0 and J45 values were lower than 0.681 for the total group. CONCLUSIONS: The anterior keratometric values obtained by the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer showed high agreement levels, but the posterior keratometric values showed lower agreement levels. Hindawi 2018-12-27 /pmc/articles/PMC6327256/ /pubmed/30687546 http://dx.doi.org/10.1155/2018/6764805 Text en Copyright © 2018 Jae Hyuck Lee et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Lee, Jae Hyuck
Lee, Yong Woo
Lee, Jong Soo
Knorz, Michael C.
Auffarth, Gerd U.
Choi, Chul Young
Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title_full Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title_fullStr Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title_full_unstemmed Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title_short Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer
title_sort comparison of color light-emitting diode corneal topographer and dual rotating scheimpflug–placido topographer
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6327256/
https://www.ncbi.nlm.nih.gov/pubmed/30687546
http://dx.doi.org/10.1155/2018/6764805
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