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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2018
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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. |
format | Online Article Text |
id | pubmed-6327256 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
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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