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Posterior capsule dynamics during femtosecond laser lens fragmentation

PURPOSE: The dynamics of the posterior capsule during femtosecond laser lens fragmentation has received little attention in the literature. We analysed the movements of the posterior capsule to identify the rupture risk factors, if any, and to suggest possible modification of the laser spot energy p...

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Autores principales: Bellucci, Carlo, Mora, Paolo, Tedesco, Salvatore Antonio, Bellucci, Roberto, Gandolfi, Stefano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10400471/
https://www.ncbi.nlm.nih.gov/pubmed/37191929
http://dx.doi.org/10.1007/s10792-023-02739-6
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author Bellucci, Carlo
Mora, Paolo
Tedesco, Salvatore Antonio
Bellucci, Roberto
Gandolfi, Stefano
author_facet Bellucci, Carlo
Mora, Paolo
Tedesco, Salvatore Antonio
Bellucci, Roberto
Gandolfi, Stefano
author_sort Bellucci, Carlo
collection PubMed
description PURPOSE: The dynamics of the posterior capsule during femtosecond laser lens fragmentation has received little attention in the literature. We analysed the movements of the posterior capsule to identify the rupture risk factors, if any, and to suggest possible modification of the laser spot energy pattern during fragmentation. MATERIALS AND METHODS: Posterior capsule ruptures during fragmentation were identified over a 10-year period of femtosecond laser use. In addition, the dynamics of the posterior capsule were identified through the real-time swept-source OCT lateral view available during the surgeries. RESULTS: Out of the 1465 laser cataract procedures performed, we recorded 1 case of posterior capsule rupture during lens fragmentation, which was caused by eye movement that was detected but ignored by the surgeon. Three types of posterior capsule dynamics were identified, all related to a gas bubble formation during the first part of the lens fragmentation. In eyes with a hard nucleus, the concussion of the posterior capsule was evident, however, with no capsule rupture. DISCUSSION: Maintaining good docking throughout the whole procedure seems important in avoiding a posterior capsule cut by the femtosecond laser. In addition, a Gaussian pattern of spot energy is suggested when fragmenting hard cataracts. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10792-023-02739-6.
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spelling pubmed-104004712023-08-05 Posterior capsule dynamics during femtosecond laser lens fragmentation Bellucci, Carlo Mora, Paolo Tedesco, Salvatore Antonio Bellucci, Roberto Gandolfi, Stefano Int Ophthalmol Original Paper PURPOSE: The dynamics of the posterior capsule during femtosecond laser lens fragmentation has received little attention in the literature. We analysed the movements of the posterior capsule to identify the rupture risk factors, if any, and to suggest possible modification of the laser spot energy pattern during fragmentation. MATERIALS AND METHODS: Posterior capsule ruptures during fragmentation were identified over a 10-year period of femtosecond laser use. In addition, the dynamics of the posterior capsule were identified through the real-time swept-source OCT lateral view available during the surgeries. RESULTS: Out of the 1465 laser cataract procedures performed, we recorded 1 case of posterior capsule rupture during lens fragmentation, which was caused by eye movement that was detected but ignored by the surgeon. Three types of posterior capsule dynamics were identified, all related to a gas bubble formation during the first part of the lens fragmentation. In eyes with a hard nucleus, the concussion of the posterior capsule was evident, however, with no capsule rupture. DISCUSSION: Maintaining good docking throughout the whole procedure seems important in avoiding a posterior capsule cut by the femtosecond laser. In addition, a Gaussian pattern of spot energy is suggested when fragmenting hard cataracts. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10792-023-02739-6. Springer Netherlands 2023-05-16 2023 /pmc/articles/PMC10400471/ /pubmed/37191929 http://dx.doi.org/10.1007/s10792-023-02739-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Paper
Bellucci, Carlo
Mora, Paolo
Tedesco, Salvatore Antonio
Bellucci, Roberto
Gandolfi, Stefano
Posterior capsule dynamics during femtosecond laser lens fragmentation
title Posterior capsule dynamics during femtosecond laser lens fragmentation
title_full Posterior capsule dynamics during femtosecond laser lens fragmentation
title_fullStr Posterior capsule dynamics during femtosecond laser lens fragmentation
title_full_unstemmed Posterior capsule dynamics during femtosecond laser lens fragmentation
title_short Posterior capsule dynamics during femtosecond laser lens fragmentation
title_sort posterior capsule dynamics during femtosecond laser lens fragmentation
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10400471/
https://www.ncbi.nlm.nih.gov/pubmed/37191929
http://dx.doi.org/10.1007/s10792-023-02739-6
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