Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices

Hesham Mohamed Gharieb,1,2 Hisham Samy Shalaby,3 Ihab Saad Othman4,5 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Research and Development, Eye World Hospital, Giza, Egypt; 3Department of Ophthalmology, Faculty of Medicine, Ain Shams University, Cairo, Egypt; 4Eye World Hospital, Giza,...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Gharieb HM, Shalaby HS, Othman IS
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	scheimpflug wavefront corneal topography Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/918c8309f1c648d28b26b5d08b0b839e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:918c8309f1c648d28b26b5d08b0b839e
record_format	dspace
spelling	oai:doaj.org-article:918c8309f1c648d28b26b5d08b0b839e2021-12-02T12:10:21ZRepeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices1177-5483https://doaj.org/article/918c8309f1c648d28b26b5d08b0b839e2020-11-01T00:00:00Zhttps://www.dovepress.com/repeatability-and-interchangeability-of-topometric-anterior-chamber-an-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Hesham Mohamed Gharieb,1,2 Hisham Samy Shalaby,3 Ihab Saad Othman4,5 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Research and Development, Eye World Hospital, Giza, Egypt; 3Department of Ophthalmology, Faculty of Medicine, Ain Shams University, Cairo, Egypt; 4Eye World Hospital, Giza, Egypt; 5Faculty of Medicine, Cairo University, Giza, EgyptCorrespondence: Hisham Samy ShalabyDepartment of Ophthalmology, Faculty of Medicine, Ain Shams University, Abbassia Square, Cairo 11591, EgyptTel +20 1003641789Email hisham_ophth@yahoo.comPurpose: This study aims to assess the intra-operator repeatability and correlation of the Pentacam HR (device 1) and Sirius (device 2) in measuring anterior segment parameters and to evaluate the agreement of their readings and therefore their interchangeability in a clinical setting.Methods: This is a prospective non-randomized study was conducted on the right eyes of 102 subjects coming to Eye World Hospital, Giza, Egypt. With each machine, four scans were taken by a single examiner. Each device was used to measure keratometric indices, corneal thickness, anterior chamber depth, anterior chamber angle, corneal diameter and corneal optical aberrations.Results: Both devices show high repeatability for corneal thickness, corneal diameter, anterior chamber depth and keratometric indices (except for maximum keratometry, where device 1 shows high repeatability and device 2 shows low repeatability). On the other hand, both devices show poor repeatability for anterior chamber angle, Q-values, root mean square, spherical, coma and trefoil aberrations. The readings of the two devices are strongly correlated as regards only keratometric indices, corneal thickness and anterior chamber depth. In addition, the readings of the devices are in good agreement as regards only keratometric indices (except maximum keratometry), corneal thickness, anterior chamber depth, anterior chamber angle, root mean square, spherical and trefoil aberrations.Conclusion: Both devices showed variable intra-observer repeatability, with the device 1 showing slightly higher repeatability. Despite the similarity between some of the readings of the two devices, caution is advised before considering them interchangeable. We therefore do not recommend using them in alternation in refractive surgery.Keywords: Scheimpflug, wavefront, corneal topographyGharieb HMShalaby HSOthman ISDove Medical Pressarticlescheimpflugwavefrontcorneal topographyOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 3801-3810 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	scheimpflug wavefront corneal topography Ophthalmology RE1-994
spellingShingle	scheimpflug wavefront corneal topography Ophthalmology RE1-994 Gharieb HM Shalaby HS Othman IS Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
description	Hesham Mohamed Gharieb,1,2 Hisham Samy Shalaby,3 Ihab Saad Othman4,5 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Research and Development, Eye World Hospital, Giza, Egypt; 3Department of Ophthalmology, Faculty of Medicine, Ain Shams University, Cairo, Egypt; 4Eye World Hospital, Giza, Egypt; 5Faculty of Medicine, Cairo University, Giza, EgyptCorrespondence: Hisham Samy ShalabyDepartment of Ophthalmology, Faculty of Medicine, Ain Shams University, Abbassia Square, Cairo 11591, EgyptTel +20 1003641789Email hisham_ophth@yahoo.comPurpose: This study aims to assess the intra-operator repeatability and correlation of the Pentacam HR (device 1) and Sirius (device 2) in measuring anterior segment parameters and to evaluate the agreement of their readings and therefore their interchangeability in a clinical setting.Methods: This is a prospective non-randomized study was conducted on the right eyes of 102 subjects coming to Eye World Hospital, Giza, Egypt. With each machine, four scans were taken by a single examiner. Each device was used to measure keratometric indices, corneal thickness, anterior chamber depth, anterior chamber angle, corneal diameter and corneal optical aberrations.Results: Both devices show high repeatability for corneal thickness, corneal diameter, anterior chamber depth and keratometric indices (except for maximum keratometry, where device 1 shows high repeatability and device 2 shows low repeatability). On the other hand, both devices show poor repeatability for anterior chamber angle, Q-values, root mean square, spherical, coma and trefoil aberrations. The readings of the two devices are strongly correlated as regards only keratometric indices, corneal thickness and anterior chamber depth. In addition, the readings of the devices are in good agreement as regards only keratometric indices (except maximum keratometry), corneal thickness, anterior chamber depth, anterior chamber angle, root mean square, spherical and trefoil aberrations.Conclusion: Both devices showed variable intra-observer repeatability, with the device 1 showing slightly higher repeatability. Despite the similarity between some of the readings of the two devices, caution is advised before considering them interchangeable. We therefore do not recommend using them in alternation in refractive surgery.Keywords: Scheimpflug, wavefront, corneal topography
format	article
author	Gharieb HM Shalaby HS Othman IS
author_facet	Gharieb HM Shalaby HS Othman IS
author_sort	Gharieb HM
title	Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
title_short	Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
title_full	Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
title_fullStr	Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
title_full_unstemmed	Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices
title_sort	repeatability and interchangeability of topometric, anterior chamber and corneal wavefront data between two scheimpflug camera devices
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/918c8309f1c648d28b26b5d08b0b839e
work_keys_str_mv	AT ghariebhm repeatabilityandinterchangeabilityoftopometricanteriorchamberandcornealwavefrontdatabetweentwoscheimpflugcameradevices AT shalabyhs repeatabilityandinterchangeabilityoftopometricanteriorchamberandcornealwavefrontdatabetweentwoscheimpflugcameradevices AT othmanis repeatabilityandinterchangeabilityoftopometricanteriorchamberandcornealwavefrontdatabetweentwoscheimpflugcameradevices
_version_	1718394641483563008

Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices

Ejemplares similares