MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis
Tomas M Grippo,1,2 Facundo G Sanchez,1,3 Joan Stauffer,4 George Marcellino4 1Department of Glaucoma, Grippo Glaucoma & Cataract Center, Buenos Aires, Argentina; 2Department of Ophthalmology, Hospital Alemán, Buenos Aires, Argentina; 3Glaucoma Research, Legacy Devers Eye Institute,...
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Dove Medical Press
2021
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oai:doaj.org-article:7d83bbfd90a34546a305ca119f1e89532021-12-02T18:05:42ZMicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis1177-5483https://doaj.org/article/7d83bbfd90a34546a305ca119f1e89532021-06-01T00:00:00Zhttps://www.dovepress.com/micropulse-transscleral-laser-therapy--fluence-may-explain-variability-peer-reviewed-fulltext-article-OPTHhttps://doaj.org/toc/1177-5483Tomas M Grippo,1,2 Facundo G Sanchez,1,3 Joan Stauffer,4 George Marcellino4 1Department of Glaucoma, Grippo Glaucoma & Cataract Center, Buenos Aires, Argentina; 2Department of Ophthalmology, Hospital Alemán, Buenos Aires, Argentina; 3Glaucoma Research, Legacy Devers Eye Institute, Portland, OR, USA; 4Glaucoma, Iridex Corp., Mountain View, CA, USACorrespondence: Tomas M GrippoDepartment of Glaucoma, Grippo Glaucoma & Cataract Center, Av. Luis Maria Campos 250, 1st Floor, Suite O, Buenos Aires, ArgentinaTel +54 11 4774-9004Email tomasgrippo@yahoo.comAbstract: Since the first peer-reviewed publication on MicroPulse® Transscleral Laser Therapy (MP-TLT) in 2010, authors worldwide have used a wide range of treatment parameter combinations with varying clinical efficacy in terms of the magnitude of intraocular pressure reduction, success rate, durability, and safety profile. This has made it difficult to determine the proper parameters necessary to optimize efficacy and safety, and has made comparison of results from one investigation to another difficult. The first goal of this paper is to explain and highlight the impact of the choices of exposure time and the number of sweeps per hemisphere in terms of “sweep velocity” on energy delivery to the eye. These treatment parameters are underreported in the literature. The second goal is to introduce fluence as a “dose” metric, that combines all the treatment parameters and constants into a single number. Fluence may be a better light-dose metric and a more reliable indicator of clinical outcomes compared to total energy.Keywords: micropulse, glaucoma, fluence, total energy, sweep velocityGrippo TMSanchez FGStauffer JMarcellino GDove Medical Pressarticlemicropulseglaucomafluencetotal energysweep velocityOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 15, Pp 2411-2419 (2021) |
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micropulse glaucoma fluence total energy sweep velocity Ophthalmology RE1-994 |
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micropulse glaucoma fluence total energy sweep velocity Ophthalmology RE1-994 Grippo TM Sanchez FG Stauffer J Marcellino G MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
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Tomas M Grippo,1,2 Facundo G Sanchez,1,3 Joan Stauffer,4 George Marcellino4 1Department of Glaucoma, Grippo Glaucoma & Cataract Center, Buenos Aires, Argentina; 2Department of Ophthalmology, Hospital Alemán, Buenos Aires, Argentina; 3Glaucoma Research, Legacy Devers Eye Institute, Portland, OR, USA; 4Glaucoma, Iridex Corp., Mountain View, CA, USACorrespondence: Tomas M GrippoDepartment of Glaucoma, Grippo Glaucoma & Cataract Center, Av. Luis Maria Campos 250, 1st Floor, Suite O, Buenos Aires, ArgentinaTel +54 11 4774-9004Email tomasgrippo@yahoo.comAbstract: Since the first peer-reviewed publication on MicroPulse® Transscleral Laser Therapy (MP-TLT) in 2010, authors worldwide have used a wide range of treatment parameter combinations with varying clinical efficacy in terms of the magnitude of intraocular pressure reduction, success rate, durability, and safety profile. This has made it difficult to determine the proper parameters necessary to optimize efficacy and safety, and has made comparison of results from one investigation to another difficult. The first goal of this paper is to explain and highlight the impact of the choices of exposure time and the number of sweeps per hemisphere in terms of “sweep velocity” on energy delivery to the eye. These treatment parameters are underreported in the literature. The second goal is to introduce fluence as a “dose” metric, that combines all the treatment parameters and constants into a single number. Fluence may be a better light-dose metric and a more reliable indicator of clinical outcomes compared to total energy.Keywords: micropulse, glaucoma, fluence, total energy, sweep velocity |
| format |
article |
| author |
Grippo TM Sanchez FG Stauffer J Marcellino G |
| author_facet |
Grippo TM Sanchez FG Stauffer J Marcellino G |
| author_sort |
Grippo TM |
| title |
MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
| title_short |
MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
| title_full |
MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
| title_fullStr |
MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
| title_full_unstemmed |
MicroPulse® Transscleral Laser Therapy – Fluence May Explain Variability in Clinical Outcomes: A Literature Review and Analysis |
| title_sort |
micropulse® transscleral laser therapy – fluence may explain variability in clinical outcomes: a literature review and analysis |
| publisher |
Dove Medical Press |
| publishDate |
2021 |
| url |
https://doaj.org/article/7d83bbfd90a34546a305ca119f1e8953 |
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