532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy

Keissy Sousa,1 Gil Calvão-Santos,1 Marina João,2 Nuno Gomes,1 Manuel Falcão3,4 1Retina Department of Hospital de Braga, Braga, Portugal; 2Ophthalmology Department of Hospital de Braga, Braga, Portugal; 3Retina Department of Centro Hospitalar Universitário...

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Autores principales:	Sousa K, Calvão-Santos G, João M, Gomes N, Falcão M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	central serous retinopathy sd-oct subthreshold micropulse laser 532 nm wavelength outer retina bands Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/dfe6e0d45791477d85cc4c8181c6048c
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spelling	oai:doaj.org-article:dfe6e0d45791477d85cc4c8181c6048c2021-12-02T11:01:57Z532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy1177-5483https://doaj.org/article/dfe6e0d45791477d85cc4c8181c6048c2020-02-01T00:00:00Zhttps://www.dovepress.com/532-nm-subthreshold-micropulse-laser-for-the-treatment-of-chronic-cent-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Keissy Sousa,1 Gil Calvão-Santos,1 Marina João,2 Nuno Gomes,1 Manuel Falcão3,4 1Retina Department of Hospital de Braga, Braga, Portugal; 2Ophthalmology Department of Hospital de Braga, Braga, Portugal; 3Retina Department of Centro Hospitalar Universitário S. João, Porto, Portugal; 4Department of Surgery and Physiology of Faculty of Medicine of the University of Porto, Porto, PortugalCorrespondence: Manuel FalcãoOftalmologia, Centro Hospitalar S. João, Alameda Prof. Hernâni Monteiro, Porto 4200-319, PortugalTel +351 22 551 2100Email falcao@med.up.ptIntroduction: Subthreshold micropulse laser treatment with a 532 nm (532-SML) wavelength has been suggested as a treatment option for the treatment of chronic central serous retinopathy (cCSR). The objective is to present its effects and complications.Methods: We present a retrospective cohort study of cCSR patients submitted to 532-SML. Best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography (SD-OCT) parameters – central macular thickness, subfoveal outer nuclear layer, external limiting membrane, ellipsoid band, interdigitation band, subretinal fluid and choroidal thickness – were evaluated before and 12 weeks after treatment. A power of 50%, a duty cycle of 5%, exposure time of 200 ms and a spot size of 160 μm were the applied laser parameters.Results: We included 26 eyes. Overall there were no significant changes in visual acuity (median 0.20 (IQR 0) logMAR before and after treatment) or SD-OCT parameters. However, visual benefits occurred in 42.3% (n=11) of the patients and in half of the cases, subretinal fluid was completely reabsorbed. There were no complications.Conclusion: In this study,  532-SML was overall ineffective on cCSR as it did not lead to significant changes in the overall median visual acuity and SD-OCT parameters. However, some patients may have benefited functionally and anatomically from the treatment; further investigation is necessary to understand the potential of 532-SML.Keywords: central serous retinopathy, SD-OCT, subthreshold micropulse laser, 532 nm wavelength, outer retina bandsSousa KCalvão-Santos GJoão MGomes NFalcão MDove Medical Pressarticlecentral serous retinopathysd-octsubthreshold micropulse laser532 nm wavelengthouter retina bandsOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 525-531 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	central serous retinopathy sd-oct subthreshold micropulse laser 532 nm wavelength outer retina bands Ophthalmology RE1-994
spellingShingle	central serous retinopathy sd-oct subthreshold micropulse laser 532 nm wavelength outer retina bands Ophthalmology RE1-994 Sousa K Calvão-Santos G João M Gomes N Falcão M 532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
description	Keissy Sousa,1 Gil Calvão-Santos,1 Marina João,2 Nuno Gomes,1 Manuel Falcão3,4 1Retina Department of Hospital de Braga, Braga, Portugal; 2Ophthalmology Department of Hospital de Braga, Braga, Portugal; 3Retina Department of Centro Hospitalar Universitário S. João, Porto, Portugal; 4Department of Surgery and Physiology of Faculty of Medicine of the University of Porto, Porto, PortugalCorrespondence: Manuel FalcãoOftalmologia, Centro Hospitalar S. João, Alameda Prof. Hernâni Monteiro, Porto 4200-319, PortugalTel +351 22 551 2100Email falcao@med.up.ptIntroduction: Subthreshold micropulse laser treatment with a 532 nm (532-SML) wavelength has been suggested as a treatment option for the treatment of chronic central serous retinopathy (cCSR). The objective is to present its effects and complications.Methods: We present a retrospective cohort study of cCSR patients submitted to 532-SML. Best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography (SD-OCT) parameters – central macular thickness, subfoveal outer nuclear layer, external limiting membrane, ellipsoid band, interdigitation band, subretinal fluid and choroidal thickness – were evaluated before and 12 weeks after treatment. A power of 50%, a duty cycle of 5%, exposure time of 200 ms and a spot size of 160 μm were the applied laser parameters.Results: We included 26 eyes. Overall there were no significant changes in visual acuity (median 0.20 (IQR 0) logMAR before and after treatment) or SD-OCT parameters. However, visual benefits occurred in 42.3% (n=11) of the patients and in half of the cases, subretinal fluid was completely reabsorbed. There were no complications.Conclusion: In this study,  532-SML was overall ineffective on cCSR as it did not lead to significant changes in the overall median visual acuity and SD-OCT parameters. However, some patients may have benefited functionally and anatomically from the treatment; further investigation is necessary to understand the potential of 532-SML.Keywords: central serous retinopathy, SD-OCT, subthreshold micropulse laser, 532 nm wavelength, outer retina bands
format	article
author	Sousa K Calvão-Santos G João M Gomes N Falcão M
author_facet	Sousa K Calvão-Santos G João M Gomes N Falcão M
author_sort	Sousa K
title	532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
title_short	532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
title_full	532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
title_fullStr	532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
title_full_unstemmed	532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy
title_sort	532-nm subthreshold micropulse laser for the treatment of chronic central serous retinopathy
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/dfe6e0d45791477d85cc4c8181c6048c
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532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy

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