Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry

Anne Herr,1 Andreas Remky,2 Thalia Hirsch,1 Corinna Rennings,1 Niklas Plange1 1Department of Ophthalmology, RWTH Aachen University, Aachen, Germany; 2Augenbelegabteilung Krankenhaus Barmherzige Brueder, Regensburg, Germany Introduction: Intraocular pressure (IOP) determination using dynamic contour...

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Autores principales:	Herr A, Remky A, Hirsch T, Rennings C, Plange N
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/d58c55a429244157bf20a704572087da
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spelling	oai:doaj.org-article:d58c55a429244157bf20a704572087da2021-12-02T02:32:41ZTonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry1177-54671177-5483https://doaj.org/article/d58c55a429244157bf20a704572087da2013-05-01T00:00:00Zhttp://www.dovepress.com/tonometry-in-corneal-edema-after-cataract-surgery-dynamic-contour-tono-a12947https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Anne Herr,1 Andreas Remky,2 Thalia Hirsch,1 Corinna Rennings,1 Niklas Plange1 1Department of Ophthalmology, RWTH Aachen University, Aachen, Germany; 2Augenbelegabteilung Krankenhaus Barmherzige Brueder, Regensburg, Germany Introduction: Intraocular pressure (IOP) determination using dynamic contour tonometry (DCT) has been considered to be independent of central corneal thickness (CCT), while Goldmann applanation tonometry (GAT) is known to be influenced by various corneal properties. In this study, IOP was measured before and 1 day after cataract surgery using GAT and DCT to investigate the possible effects of corneal edema on IOP measurements. Methods: Thirty patients with advanced cataracts were included in a pilot study. IOP was measured using GAT and DCT before and 1 day after phacoemulsification. CCT was determined before and after surgery to quantify postsurgical corneal edema. Results: CCT increased significantly (by 89.7 ± 107.4 µm, P < 0.0001) 1 day after surgery. No significant difference was found for IOP measurements using GAT and DCT before surgery (mean IOP GAT: 17.5 ± 5.7 mmHg; mean IOP DCT: 17.9 ± 6.4 mmHg; P = 0.67) and 1 day after surgery (mean IOP GAT: 16.1 ± 6.6 mmHg; mean IOP DCT: 16.8 ± 8.3 mmHg; P = 0.69). IOP values using GAT and DCT were significantly correlated before as well as 1 day after surgery (before surgery: r = 0.82, P ≤ 0.0001; after surgery r = 0.83, P < 0.0001). Bland–Altman plots showed a high variability in the difference in IOP measurements between methods before and 1 day after surgery. Conclusion: GAT and DCT seem to be equally valuable in IOP determination in postsurgical central corneal edema, although large differences between both methods are present in individual patients. IOP evaluation in corneal edema remains a difficult clinical challenge. Keywords: Goldmann applanation tonometry, dynamic contour tonometry, corneal edema, cataract surgery, intraocular pressureHerr ARemky AHirsch TRennings CPlange NDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 815-819 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Herr A Remky A Hirsch T Rennings C Plange N Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
description	Anne Herr,1 Andreas Remky,2 Thalia Hirsch,1 Corinna Rennings,1 Niklas Plange1 1Department of Ophthalmology, RWTH Aachen University, Aachen, Germany; 2Augenbelegabteilung Krankenhaus Barmherzige Brueder, Regensburg, Germany Introduction: Intraocular pressure (IOP) determination using dynamic contour tonometry (DCT) has been considered to be independent of central corneal thickness (CCT), while Goldmann applanation tonometry (GAT) is known to be influenced by various corneal properties. In this study, IOP was measured before and 1 day after cataract surgery using GAT and DCT to investigate the possible effects of corneal edema on IOP measurements. Methods: Thirty patients with advanced cataracts were included in a pilot study. IOP was measured using GAT and DCT before and 1 day after phacoemulsification. CCT was determined before and after surgery to quantify postsurgical corneal edema. Results: CCT increased significantly (by 89.7 ± 107.4 µm, P < 0.0001) 1 day after surgery. No significant difference was found for IOP measurements using GAT and DCT before surgery (mean IOP GAT: 17.5 ± 5.7 mmHg; mean IOP DCT: 17.9 ± 6.4 mmHg; P = 0.67) and 1 day after surgery (mean IOP GAT: 16.1 ± 6.6 mmHg; mean IOP DCT: 16.8 ± 8.3 mmHg; P = 0.69). IOP values using GAT and DCT were significantly correlated before as well as 1 day after surgery (before surgery: r = 0.82, P ≤ 0.0001; after surgery r = 0.83, P < 0.0001). Bland–Altman plots showed a high variability in the difference in IOP measurements between methods before and 1 day after surgery. Conclusion: GAT and DCT seem to be equally valuable in IOP determination in postsurgical central corneal edema, although large differences between both methods are present in individual patients. IOP evaluation in corneal edema remains a difficult clinical challenge. Keywords: Goldmann applanation tonometry, dynamic contour tonometry, corneal edema, cataract surgery, intraocular pressure
format	article
author	Herr A Remky A Hirsch T Rennings C Plange N
author_facet	Herr A Remky A Hirsch T Rennings C Plange N
author_sort	Herr A
title	Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
title_short	Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
title_full	Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
title_fullStr	Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
title_full_unstemmed	Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry
title_sort	tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus goldmann applanation tonometry
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/d58c55a429244157bf20a704572087da
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Tonometry in corneal edema after cataract surgery: dynamic contour tonometry versus Goldmann applanation tonometry

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