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  • Title: Ab externo scleral fixation of the Cionni modified capsular tension ring.
    Author: Ahmed II, Crandall AS.
    Journal: J Cataract Refract Surg; 2001 Jul; 27(7):977-81. PubMed ID: 11489563.
    Abstract:
    The Cionni modified capsular tension ring (CTR) allows for scleral fixation in cases of significant zonular dialysis, providing long-term centration of in-the-bag foldable intraocular lenses. Previous techniques of suture placement require placement of the primary incision along the axis of zonular weakness or enlarging and/or distorting the primary incision to attain proper positioning. They also use blind passes of the needle under the iris to approximate the ciliary sulcus. We describe an external closed-system approach for preplacing 10-0 polypropylene sutures in the ciliary sulcus for a Cionni modified CTR under topical anesthesia. This technique does not use blind passes of the suture needle and results in accurate placement of the sutures in the ciliary sulcus under a closed and stable system.
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