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      Anatomical and Functional Results of Endotamponade with Heavy Silicone Oil – Densiron® 68 – in Complicated Retinal Detachment

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          Abstract

          Background: High-density silicone oils are newly developed long-term tamponade agents for the treatment of complicated retinal detachment in the inferior retina. Previous studies describe satisfying anatomical and functional results. In this study we examined the largest cohort so far for a 9-month follow-up and performed a comparison to conventional silicone oil. Methods: Our study documents results and adverse effects after vitreoretinal surgery and endotamponade with Densiron® 68 in 99 cases of complicated retinal detachment. A 9-month follow-up was performed. Data of 21 patients with intraocular conventional silicone oil tamponade in complicated retinal detachment were retrospectively analyzed and served as control. Results: Anatomical success was achieved in 78 of 89 eyes (87.6%) with completed follow-up; visual acuity did not change significantly (from mean preoperative logMAR 1.88 to postoperative logMAR 1.96 (p = 0.9). Compared to control a higher anatomical success but a similar number of adverse effects were observed with heavy silicone oil in vitreous. Nevertheless, patients who received Densiron 68 twice due to redetachment showed a significantly higher rate of intraocular inflammation with the tamponade agent in situ. Conclusion: Our results support the hypothesis of Densiron 68 as potent tamponade agent for complicated retinal detachment in the inferior retinal segments especially in eyes where a previous operation failed.

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          Silicone oil-RMN3 mixture ("heavy silicone oil") as internal tamponade for complicated retinal detachment.

          Raphael Meier, Peter Wiedemann, Verena Schön … (2003)
          To evaluate the efficacy and safety of a silicone oil-RMN3 mixture ("heavy silicone oil") as heavier as water internal retinal tamponade after vitrectomy for complicated retinal detachment. The relative density of the heavier-than-water silicone oil was 1.03 g/cm3, and the viscosity was 3,800 cSt. Heavy silicone oil is designed to tamponade the inferior retina in complicated retinal detachment. Patients with a complicated retinal detachment involving the inferior part of the retina requiring internal tamponade with silicone oil were recruited for this prospective study. Inclusion criteria were retinal detachment secondary to proliferative vitreoretinopathy (stage > or = C2), inferior or posterior tears, or penetrating trauma. The heavy silicone oil was injected at the end of surgery after peeling of retinal membranes or retinotomy. Follow-up examinations were scheduled at 1, 3, 6 months, and 1 year after the initial surgery. A total of 33 eyes of 33 patients aged from 20 to 84 years (mean, 56 +/- 18 years) were treated with heavy silicone oil. Follow-up ranged from 12 to 16 months. Rhegmatogenous retinal detachment with significant proliferative vitreoretinopathy accounted for 17 cases, inferior holes for three, and trauma with retinal detachment for three. Initial visual acuity ranged from 20/50 to hand motions. Initial retinal reattachment was achieved in all cases. Complications included increased intraocular pressure in six eyes (18%), intraocular inflammation and synechia formation in one eye (3%), a central retinal artery occlusion after heavy oil removal in one eye, and scattered retinal hemorrhages during follow-up in two eyes (6%). Significant emulsification was not observed during intraocular tamponade with heavy silicone oil. At the last follow-up, all eyes had macular attachment, and 24 eyes had a visual acuity better than or equal to 20/400. The results of this prospective study show the good intraocular tolerance of heavy silicone oil as tamponade in complicated retinal detachment. Its specific gravity allows for sufficient tamponade of inferior retinal tears for at least 3 months without significant side effects.
          Article 0 comments Cited 34 times – based on 0 reviews     Review now
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            Tamponade efficiency of perfluorohexyloctane and silicone oil solutions in a model eye chamber.

            James E. Herbert-Read, Ashley R. Williams, T Stappler … (2004)
            As no single tamponade agent yet fulfils all the requirements of a long term inferior tamponade, attempts have been made to mix tamponade materials. This study investigated perfluorohexyloctane (F(6)H(8)) and silicone oil solutions designed to take advantage of the high specific gravity and interfacial tension of the F(6)H(8) and the high viscosity of silicone oil. Solutions of three different densities were examined (1.01, 1.03 and 1.06 g/cm(3)) inside transparent chambers made of surface modified poly(methylmethacrylate) (PMMA). Compared to F(6)H(8), the solutions had poorer contact with hydrophilic surface of the chambers. The higher the specific gravity of the solution, the better was the contact. The solution with a specific gravity 1.01 g/cm(3) is probably of no use clinically. The model eye chamber made of surface modified PMMA is an efficient way of screening and choosing solutions with promising physical properties. Solutions of silicone oil with F(6)H(8) in other proportions or with other semifluorinated alkanes may be of interest.
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              Clinicopathological correlation of epiretinal membranes and posterior lens opacification following perfluorohexyloctane tamponade.

              P Hiscott, R. Magee, M J Colthurst … (2001)
              Epiretinal and retrolental proliferation may occur during prolonged use of the novel tamponade agent perfluorohexyloctane (F(6)H(8)). This study aims to determine whether there is any histological evidence that F(6)H(8) has a role in the formation of these membranes.
              Article 0 comments Cited 12 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): ORE
                Journal ID (nlm-ta): Ophthalmic Res
                Journal ID (doi): 10.1159/issn.0030-3747
                Title: Ophthalmic Research
                Publisher: S. Karger AG
                ISSN (Print): 0030-3747
                ISSN (Electronic): 1423-0259
                Publication date Subscription-year: 2007
                Publication date (Print): August 2007
                Publication date (Electronic): 26 June 2007
                Volume: 39
                Issue: 4
                Pages: 198-206
                Affiliations
                aDepartment of Ophthalmology, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, and bDepartment of Ophthalmology, Städtisches Klinikum Chemnitz, Chemnitz, Germany
                Article
                Publisher ID: 104681 Other ID: Ophthalmic Res 2007;39:198–206
                DOI: 10.1159/000104681
                PubMed ID: 17596752
                SO-VID: bedf82f3-0470-43c7-8e25-72456f119cac
                Copyright © © 2007 S. Karger AG, Basel
                License:

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                Date received : 02 May 2006
                Date accepted : 03 October 2007
                Page count
                Figures: 2, Tables: 5, References: 19, Pages: 9
                Categories
                Subject: Original Paper

                ScienceOpen disciplines: Vision sciences,Ophthalmology & Optometry,Pathology
                Keywords: Endotamponade, heavy silicone oil,Retinal detachment,Densiron® 68
                Data availability:
                ScienceOpen disciplines: Vision sciences, Ophthalmology & Optometry, Pathology
                Keywords: Endotamponade, heavy silicone oil, Retinal detachment, Densiron® 68

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