alexa Categorization and Surgical Techniques of Weak Zonule Based on Findings at Capsulorhexis during Cataract Surgery
ISSN: 2155-9570

Journal of Clinical & Experimental Ophthalmology
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Research Article

Categorization and Surgical Techniques of Weak Zonule Based on Findings at Capsulorhexis during Cataract Surgery

Saori Yaguchi1, Shigeo Yaguchi2,3*, Yasuhiko Asano2, Sayuri Aoki2, Misuzu Hamakawa2, Tadahiko Kozawa3, Kazuno Negishi1 and Kazuo Tsubota1
1Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
2Department of Ophthalmology, School of Medicine, Showa University, Fujigaoka Hospital, Yokohama, Japan
3Kozawa Eye Hospital and Diabetes Center, Mito, Japan
Corresponding Author : Shigeo Yaguchi, MD, PhD
Kozawa Eye Hospital and Diabetes Center
246, Yoshizawa-Cho, Mito-City
Ibaraki-Pref. 310-0845, Japan
Tel: +81-29-246-2111
Fax: +81-29-304-5111
E-mail: [email protected], [email protected]
Received: December 22, 2014; Accepted: March 14, 2015; Published: March 16, 2015
Citation: Yaguchi S, Yaguchi S, Asano Y, Aoki S, Hamakawa M, et al. (2015) Categorization and Surgical Techniques of Weak Zonule Based on Findings at Capsulorhexis during Cataract Surgery. J Clin Exp Ophthalmol 6:407. doi:10.4172/2155-9570.1000407
Copyright: © 2015 Yaguchi S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Purpose: We categorize weak zonule during capsulorhexis.
Design: Retrospective interventional case series.
Methods: The study examined 5447 consecutive eyes of 3527 cases that underwent phacoemulsification (PEA) and intraocular lens (IOL) implantation between March 2006 and March 2014 at Showa University Fujigaoka Hospital, Kanagawa, Japan. Weak zonule was categorized based on findings at capsulorhexis and difficulty in performing continuous curvilinear capsulorhexis (CCC). The categorization definitions were as follows: (1) Group N (normal) with no or slight lens movement at the start of the CCC and no difficulty in performing CCC, (2) Group W (weak) with moderate lens movement frequently accompanied by fold formation during CCC and some difficulty in performing CCC, (3) Group VW (very weak) because of severe lens movement and difficulties with the initial puncture, CCC can be performed with the aid of a highly retentive and cohesive ophthalmic viscoelastic device (OVD; Healon 5®), and (4) Group EW (extremely weak) with zonular deficiency in addition to the Group VW criteria and accounted for the cases of severe phacodonesis, lens subluxation, lens luxation into the anterior chamber, and dropped nucleus into the vitreous cavity that could be categorized preoperatively. We examined capsule stabilization device use during PEA, surgical lens removal, and IOL fixation in each group.
Results: We defined 5098 eyes as Group N, 251 eyes as Group W, 55 eyes as Group VW, and 43 eyes as Group EW. As the zonule became weak, the use of the capsule stabilization device increased in PEA and intracapsular cataract extraction, and scleral suture fixation of IOL increased. Pars plana vitrectomy for lens removal was performed in 5 eyes (11.63%) categorized as Group EW. Conclusions: The categorization of weak zonule at CCC may be useful for selecting an appropriate capsule stabilization device and procedure during cataract surgery.

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