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Objective classification of zonular weakness based on lens movement at the start of capsulorhexis

PURPOSE: To quantify zonular weakness based on lens movement at the start of continuous curvilinear capsulorhexis (CCC) and establish a classification system for it. SETTING: Kozawa Eye Hospital and Diabetes Center, Mito, Japan. DESIGN: Retrospective interventional case series. METHODS: We examined...

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Autores principales: Yaguchi, Saori, Yaguchi, Shigeo, Yagi-Yaguchi, Yukari, Kozawa, Tadahiko, Bissen-Miyajima, Hiroko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5398681/
https://www.ncbi.nlm.nih.gov/pubmed/28426745
http://dx.doi.org/10.1371/journal.pone.0176169
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author Yaguchi, Saori
Yaguchi, Shigeo
Yagi-Yaguchi, Yukari
Kozawa, Tadahiko
Bissen-Miyajima, Hiroko
author_facet Yaguchi, Saori
Yaguchi, Shigeo
Yagi-Yaguchi, Yukari
Kozawa, Tadahiko
Bissen-Miyajima, Hiroko
author_sort Yaguchi, Saori
collection PubMed
description PURPOSE: To quantify zonular weakness based on lens movement at the start of continuous curvilinear capsulorhexis (CCC) and establish a classification system for it. SETTING: Kozawa Eye Hospital and Diabetes Center, Mito, Japan. DESIGN: Retrospective interventional case series. METHODS: We examined 402 consecutive eyes of 316 patients who underwent CCC, phacoemulsification and aspiration (PEA), and intraocular lens (IOL) implantation. The movement of the lens capsule was measured using images from video recordings of the CCC procedure. Zonular weakness was classified based on the shifted distance: Grade I, less than 0.20 mm; Grade II, 0.20–0.39 mm; and Grade III, greater than 0.40 mm. For each of these grades, we examined the use of the capsule stabilization device during PEA, the surgical procedure for lens removal, and IOL fixation. RESULTS: We classified 276 eyes (68.6%) as Grade I, 102 eyes (25.4%) as Grade II, and 24 eyes (6.0%) as Grade III. As the grade increased, the use of the capsule stabilization device in PEA and scleral suture fixation of IOL increased. CONCLUSIONS: Zonular weakness was quantified by measuring the movement of the lens capsule. An objective classification of zonular weakness based on lens movement may be useful for selecting the appropriate device and procedure during cataract surgery.
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spelling pubmed-53986812017-05-04 Objective classification of zonular weakness based on lens movement at the start of capsulorhexis Yaguchi, Saori Yaguchi, Shigeo Yagi-Yaguchi, Yukari Kozawa, Tadahiko Bissen-Miyajima, Hiroko PLoS One Research Article PURPOSE: To quantify zonular weakness based on lens movement at the start of continuous curvilinear capsulorhexis (CCC) and establish a classification system for it. SETTING: Kozawa Eye Hospital and Diabetes Center, Mito, Japan. DESIGN: Retrospective interventional case series. METHODS: We examined 402 consecutive eyes of 316 patients who underwent CCC, phacoemulsification and aspiration (PEA), and intraocular lens (IOL) implantation. The movement of the lens capsule was measured using images from video recordings of the CCC procedure. Zonular weakness was classified based on the shifted distance: Grade I, less than 0.20 mm; Grade II, 0.20–0.39 mm; and Grade III, greater than 0.40 mm. For each of these grades, we examined the use of the capsule stabilization device during PEA, the surgical procedure for lens removal, and IOL fixation. RESULTS: We classified 276 eyes (68.6%) as Grade I, 102 eyes (25.4%) as Grade II, and 24 eyes (6.0%) as Grade III. As the grade increased, the use of the capsule stabilization device in PEA and scleral suture fixation of IOL increased. CONCLUSIONS: Zonular weakness was quantified by measuring the movement of the lens capsule. An objective classification of zonular weakness based on lens movement may be useful for selecting the appropriate device and procedure during cataract surgery. Public Library of Science 2017-04-20 /pmc/articles/PMC5398681/ /pubmed/28426745 http://dx.doi.org/10.1371/journal.pone.0176169 Text en © 2017 Yaguchi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yaguchi, Saori
Yaguchi, Shigeo
Yagi-Yaguchi, Yukari
Kozawa, Tadahiko
Bissen-Miyajima, Hiroko
Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title_full Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title_fullStr Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title_full_unstemmed Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title_short Objective classification of zonular weakness based on lens movement at the start of capsulorhexis
title_sort objective classification of zonular weakness based on lens movement at the start of capsulorhexis
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5398681/
https://www.ncbi.nlm.nih.gov/pubmed/28426745
http://dx.doi.org/10.1371/journal.pone.0176169
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