Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography

Ori Segal,1 Yinon Shapira,2 Assaf Gershoni,1 Igor Vainer,2 Arie Y Nemet,1 Noa Geffen,1 Michael Mimouni2 1Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, 2Department of Ophthalmology, Rambam Health Care Campus, Ha...

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Autores principales:	Segal O, Shapira Y, Gershoni A, Vainer I, Nemet AY, Geffen N, Mimouni M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2016
Materias:	macular thickness signal strength stratus OCT fast map macular measurement retinal thickness Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/714fad60d79c42d284d39e007624776c
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spelling	oai:doaj.org-article:714fad60d79c42d284d39e007624776c2021-12-02T11:31:52ZRelationship between macular thickness measurement and signal strength using Stratus optical coherence tomography1177-5483https://doaj.org/article/714fad60d79c42d284d39e007624776c2016-11-01T00:00:00Zhttps://www.dovepress.com/relationship-between-macular-thickness-measurement-and-signal-strength-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Ori Segal,1 Yinon Shapira,2 Assaf Gershoni,1 Igor Vainer,2 Arie Y Nemet,1 Noa Geffen,1 Michael Mimouni2 1Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, 2Department of Ophthalmology, Rambam Health Care Campus, Haifa, Israel Purpose: To examine the relationship between signal strength and macular thickness as measured by Stratus optical coherence tomography (OCT)’s fast macular thickness protocol in healthy subjects.Methods: In this prospective cross-sectional study 79 eyes of 42 healthy subjects were enrolled. The age, gender, and eye (right vs left) of each subject were recorded. The Stratus OCT fast macular thickness scan protocol was used and the macular thickness was measured with retinal thickness map analysis. Each eye was imaged at least six times to acquire images with signal strengths of 4, 5, 6, 7, 8, and 9 out of 10 via adjustment of the focusing knob. The OCT parameters included in the analysis were thickness in the central 1 mm and in the different quadrants in the 3-mm area.Results: Overall 79 eyes of 42 patients with a mean age of 38.4±12.4 were included. There was no significant difference between the signal strength measurements obtained with different signal strengths in the central thickness (P=0.20). In the superior, nasal, inferior, and temporal quadrants, a signal strength of 8 demonstrated up to 3 µm thicker measurements than a signal strength of 5 (P<0.05). In general linear regression analysis, after accounting for age and gender, signal strength did not remain a significant predictor of thickness in any quadrant.Conclusions: When using fast map macular measurements, a signal strength of 5 is clinically as efficient as a signal strength of 8 in measuring macular thickness in all quadrants. Insisting on higher signal strength may not be necessary. Keywords: macular thickness, signal strength, Stratus OCT, fast map macular measurement, retinal thicknessSegal OShapira YGershoni AVainer INemet AYGeffen NMimouni MDove Medical Pressarticlemacular thicknesssignal strengthstratus OCTfast map macular measurementretinal thicknessOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 10, Pp 2259-2264 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	macular thickness signal strength stratus OCT fast map macular measurement retinal thickness Ophthalmology RE1-994
spellingShingle	macular thickness signal strength stratus OCT fast map macular measurement retinal thickness Ophthalmology RE1-994 Segal O Shapira Y Gershoni A Vainer I Nemet AY Geffen N Mimouni M Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
description	Ori Segal,1 Yinon Shapira,2 Assaf Gershoni,1 Igor Vainer,2 Arie Y Nemet,1 Noa Geffen,1 Michael Mimouni2 1Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, 2Department of Ophthalmology, Rambam Health Care Campus, Haifa, Israel Purpose: To examine the relationship between signal strength and macular thickness as measured by Stratus optical coherence tomography (OCT)’s fast macular thickness protocol in healthy subjects.Methods: In this prospective cross-sectional study 79 eyes of 42 healthy subjects were enrolled. The age, gender, and eye (right vs left) of each subject were recorded. The Stratus OCT fast macular thickness scan protocol was used and the macular thickness was measured with retinal thickness map analysis. Each eye was imaged at least six times to acquire images with signal strengths of 4, 5, 6, 7, 8, and 9 out of 10 via adjustment of the focusing knob. The OCT parameters included in the analysis were thickness in the central 1 mm and in the different quadrants in the 3-mm area.Results: Overall 79 eyes of 42 patients with a mean age of 38.4±12.4 were included. There was no significant difference between the signal strength measurements obtained with different signal strengths in the central thickness (P=0.20). In the superior, nasal, inferior, and temporal quadrants, a signal strength of 8 demonstrated up to 3 µm thicker measurements than a signal strength of 5 (P<0.05). In general linear regression analysis, after accounting for age and gender, signal strength did not remain a significant predictor of thickness in any quadrant.Conclusions: When using fast map macular measurements, a signal strength of 5 is clinically as efficient as a signal strength of 8 in measuring macular thickness in all quadrants. Insisting on higher signal strength may not be necessary. Keywords: macular thickness, signal strength, Stratus OCT, fast map macular measurement, retinal thickness
format	article
author	Segal O Shapira Y Gershoni A Vainer I Nemet AY Geffen N Mimouni M
author_facet	Segal O Shapira Y Gershoni A Vainer I Nemet AY Geffen N Mimouni M
author_sort	Segal O
title	Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
title_short	Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
title_full	Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
title_fullStr	Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
title_full_unstemmed	Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography
title_sort	relationship between macular thickness measurement and signal strength using stratus optical coherence tomography
publisher	Dove Medical Press
publishDate	2016
url	https://doaj.org/article/714fad60d79c42d284d39e007624776c
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_version_	1718395884659539968

Relationship between macular thickness measurement and signal strength using Stratus optical coherence tomography

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