Repeatability and concordance of the Pentacam system: comparative study of corneal parameters measured with Pentacam and Atlas
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Título: | Repeatability and concordance of the Pentacam system: comparative study of corneal parameters measured with Pentacam and Atlas |
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Título alternativo: | Repetibilidad y concordancia de un sistema Pentacam: comparación de parámetros corneales medidos con Pentacam y con Atlas |
Autor/es: | Domenech, Begoña | Mas, David | Ronda-Pérez, Elena | Pérez Rodríguez, Jorge | Espinosa, Julián | Illueca Contri, Carlos |
Grupo/s de investigación o GITE: | Óptica y Ciencias de la Visión | Salud Pública |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Departamento de Enfermería Comunitaria, Medicina Preventiva y Salud Pública e Historia de la Ciencia |
Palabras clave: | Corneal topography | Optical aberrations | Reliability study | Scheimpflug imaging | Zernike coefficients | Concordance |
Área/s de conocimiento: | Óptica |
Fecha de creación: | sep-2008 |
Fecha de publicación: | mar-2009 |
Editor: | Sociedad Española de Óptica |
Cita bibliográfica: | DOMÉNECH AMIGOT, Begoña, et al. “Repeatability and concordance of the Pentacam system: comparative study of corneal parameters measured with Pentacam and Atlas”. Óptica Pura y Aplicada. Vol. 42, n. 1 (marzo 2009). ISSN 0030-3917, pp. 51-60 |
Resumen: | The purpose of this work is to evaluate the repeatability and concordance of the Oculus Pentacam system when using it for measuring several parameters of the anterior segment of the eye and to check whether this device can substitute a standard corneal topographer in the measurement of the corneal first surface. Reliability has been assessed using 10 successive measurements in two eyes taken by a single examiner. Within-observer and between-observer concordance measurements have been performed on 21 emmetropic and ametropic eyes without ocular pathology. Intraclass correlation coefficients (ICC) have also been calculated. To evaluate the interchangeability between the Oculus Pentacam and the Humphrey Atlas reflection corneal topographer, 22 eyes have been measured with two different systems, and differences between devices have been represented by the Bland-Altman method. The reliability study shows values lower than 5% for the coefficient of variation. Within-observer concordance for all variables measured was higher than 95%. Between-observer concordance is also generally good. The performed comparative study shows that Oculus Pentacam and Humphrey Atlas systems do not provide completely equivalent measures of the first corneal surface. The Oculus Pentacam system shows a good within-observer and between-observer concordance for the measurements provided by the system. Pentacam and Atlas systems are not completely interchangeable. Depending on the specific measured variable, differences between systems are statistically and could be clinically relevant. |
Patrocinador/es: | This work has been supported by the Ministerio de Educación y Ciencia through the project nr. FIS2005-05053. |
URI: | http://hdl.handle.net/10045/10155 |
ISSN: | 0030-3917 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | La publicación original se encuentra en: http://www.sedoptica.es |
Revisión científica: | si |
Aparece en las colecciones: | INV - IMAOS+V - Artículos de Revistas INV - SP - Artículos de Revistas |
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