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      Sutureless Intrascleral Pocket Technique of Transscleral Fixation of Intraocular Lens in Previous Vitrectomized Eyes

      case-report

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          Abstract

          In this case series, we assessed a new technique, the intrascleral pocket procedure of transscleral fixation (TF) of the intraocular lens (IOL) in post-vitrectomized eyes. We performed the transscleral fixation of IOL in four aphakic patients who underwent pars plana vitrectomy. Two points 180° apart were marked at the limbus. A 2-mm-sized intrascleral pocket was created by lamellar dissection using a crescent blade without conjunctival dissection. A 2.8-mm clear corneal incision (CCI) was made using a keratome. Prolene sutures were exteriorized through the CCI pocket and a three-piece foldable acrylic IOL was injected via CCI and the ends of the haptics were exteriorized through the CCI. The prolene sutures for each haptic in the intrascleral pocket bed were then tied and knots were buried under scleral flaps. No patient had complaints such as conjunctival irritation, and visual acuity was almost identical to preoperative best-corrected visual acuity at day 1 postoperatively. IOLs were well placed without tilting or subluxation. They had no wound dehiscence or endophthalmitis postoperatively. The intrascleral pocket procedure of TF without the need for conjunctival dissection is a successful method for sulcus fixation in post-vitrectomized eyes predisposed to developing glaucoma.

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          Most cited references16

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          Intraocular lens implantation in the absence of capsular support: a report by the American Academy of Ophthalmology.

          This review was conducted to determine the safety and efficacy of open-loop anterior chamber, scleral-sutured posterior chamber, and iris-sutured posterior chamber intraocular lenses (IOLs) in eyes with inadequate capsular support for posterior chamber implantation in the capsular bag or ciliary sulcus. It also attempted to determine whether there is a preferred IOL or fixation site of choice in eyes with inadequate capsular support. A literature search conducted for the years 1980 to 2001 yielded 189 citations related to IOL implantation in the absence of capsular support. An update search, conducted in March 2002, yielded an additional 28 articles. The Anterior Segment Panel members reviewed these abstracts and selected 148 articles of possible clinical relevance for review. Of these, 89 were considered sufficiently clinically relevant for the panel methodologist to review and rate according to the strength of evidence. A level I rating was assigned to properly conducted, well-designed, randomized clinical trials; a level II rating was assigned to well-designed cohort and case-control studies; and a level III rating was assigned to case series. Articles comparing the safety and efficacy of the IOL type and fixation site were further evaluated for the quality of the statistical methods used in the study. Studies with a rating of A or B were considered acceptable, C was borderline, and D and F were considered unacceptable as medical evidence. Forty-three articles with data concerning outcome of IOL insertion in eyes with inadequate capsular support had an evidence rating of level III or higher and were used in the final review of the safety and efficacy of one or more lens types and/or fixation sites. Seven articles had data about more than one lens type. Six had a statistical method rating of C or higher and were used to evaluate differences in visual outcomes and complication rates between lens types and fixation sites. The literature supports the safe and effective use of open-loop anterior chamber, scleral-sutured posterior chamber, and iris-sutured posterior chamber IOLs for the correction of aphakia in eyes without adequate capsular support for placement of a posterior chamber lens in the capsular bag or ciliary sulcus. At this time, there is insufficient evidence to demonstrate the superiority of one lens type or fixation site. Precise determination of small differences in visual outcome or complication rates will require a large prospective, randomized clinical trial.
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            Lens guide suture for transport and fixation in secondary IOL implantation after intracapsular extraction.

            The authors, after analyzing the different clinical situations where a secondary IOL implantation is indicated, describe 3 surgical techniques based on a common premise relying on the use of lens guide sutures for transportation or transportation and permanent fixation of the IOL's loops. The transportation sutures makes secondary implantation easier in anterior chamber lenses in technique I. The double purpose of transportation and permanent fixation at the angle permits a safe procedure with anterior chamber lenses in cases with no iris support in technique II and the possibility of sulcus or ciliary body fixation of a J type posterior chamber lens after ICCE in technique III.
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              Z-suture: a new knotless technique for transscleral suture fixation of intraocular implants.

              The presented Z-suture is a simple, rapid and safe knotless technique that facilitates transscleral suture fixation of various intraocular implants in the ciliary sulcus, such as sutured intraocular lenses, artificial iris prostheses and iris diaphragms. As the knotless approach reliably avoids suture erosion, external fixation can be performed without any protecting scleral flaps or lamellar grooves. The needle is simply passed through the sulcus and the emerging polypropylene suture is secured in the sclera using a zigzag-shaped intrascleral suture (Z-suture). Each pass starts directly adjacent to the exiting site. Five passes are sufficient to reliably fix the suture so that it resists even maximum tractive forces. Once this procedure is done, the suture can be cut without any knot. By avoiding suture knots, and hence the need for intrascleral flaps, this knotless approach may help to reduce suture-related complications such as scleral atrophy, suture erosion and infections.
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                Author and article information

                Journal
                Korean J Ophthalmol
                Korean J Ophthalmol
                KJO
                Korean Journal of Ophthalmology : KJO
                The Korean Ophthalmological Society
                1011-8942
                2092-9382
                April 2014
                14 March 2014
                : 28
                : 2
                : 181-185
                Affiliations
                [1 ]Department of Ophthalmology, Gyeongsang National University College of Medicine, Jinju, Korea.
                [2 ]Gyeongsang Institute of Health Science, Gyeongsang National University, Jinju, Korea.
                Author notes
                Corresponding Author: Seong-Jae Kim, MD. Department of Ophthalmology, Gyeongsang National University Hospital, #79 Gangnam-ro, Jinju 660-702, Korea. Tel: 82-55-750-8468, Fax: 82-55-758-4158, maya12kim@ 123456naver.com
                Article
                10.3341/kjo.2014.28.2.181
                3958636
                24688263
                3bc92ed0-6ce5-498e-b90f-2f7eee391ef9
                © 2014 The Korean Ophthalmological Society

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 11 April 2013
                : 21 June 2013
                Categories
                Case Report

                Ophthalmology & Optometry
                aphakia,intraocular lens implantation,intrascleral pocket,transscleral fixation

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