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      Large Retinectomies for Retinal Detachment Complicated by Proliferative Vitreoretinopathy: Anatomical and Functional Outcome of Silicone Oil versus Perfluoropropane Gas

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          Abstract

          Purpose

          To assess the anatomic and functional outcomes of eyes undergoing vitrectomy and large retinectomy for the management of retinal detachment (RD) complicated by advanced proliferative vitreoretinopathy (PVR).

          Methods

          A total of 66 eyes of 63 patients with RD complicated by PVR were treated with vitrectomy and 180° or more retinectomy and silicone oil (n=46) or perfluoropropane gas (n=20) were used as intraocular tamponades.

          Results

          Retinal reattachment was achieved in 89.39% (59 eyes) of the cases. The mean follow-up was 33.7 months (range 12–76 months). In gas-filled eyes, the final anatomic success rate was 85% (17 eyes) and in silicone oil-filled eyes was 91.3% (42 eyes) (p=0.46). After the initial retinectomy, the total anatomic success rate was 80.3% (53/66 eyes), 70% in gas-filled eyes (14/20 eyes) and 84.79% in silicone oil-filled eyes (39/46 eyes) (p=0.19). Visual acuity (VA) improved in 37 (56.06%) eyes, remained the same in 19 (28.78%) eyes and became worse in 10 (15.15%) cases. Best corrected VA was ≥20/200 in 22 eyes 33.33%. The final VA was associated with the preoperative VA (r=0.68), the preoperative status of the macula influence significantly the final visual acuity (p<0.0001) and there is statistically significant difference in the final visual acuity between eyes with and without anatomic success (p<0.05).

          Conclusion

          The large circumferential retinectomies can be beneficial in eyes with RD complicated by advanced PVR. No significant difference was found in anatomic success rate, and rate of complications between eyes with silicone oil tamponade and long acting gas undergoing large retinectomy. Regarding the final BCVA, slight difference was found in favor of gas-filled eyes.

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          Most cited references21

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          An updated classification of retinal detachment with proliferative vitreoretinopathy.

          The Retinal Society classification on proliferative vitreoretinopathy of 1983 has been updated to accommodate major progress in understanding of this disease. There are three grades describing increasing severity of the disease. Posterior and anterior location of the proliferations have been emphasized. A more detailed description of posterior and anterior contractions has been made possible by adding contraction types such as focal, diffuse, subretinal, circumferential contraction, and anterior displacement. The extent of the abnormality has been detailed by using clock hours instead of quadrants.
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            Outcomes of vitrectomy with inferior retinectomy in patients with recurrent rhegmatogenous retinal detachments and proliferative vitreoretinopathy.

            To report the anatomic and functional outcomes of patients treated with vitrectomy and inferior retinectomy for recurrent, rhegmatogenous retinal detachment complicated by proliferative vitreoretinopathy (PVR). Retrospective, noncomparative, interventional case series. Fifty-six patients with recurrent, rhegmatogenous retinal detachments complicated by PVR who underwent an inferior retinectomy for repair. Retrospective review over a 6-year period of patients treated with vitrectomy and inferior retinectomy. The primary outcome was anatomic success, defined as complete retinal reattachment. Secondary outcomes included change in visual acuity, the mean number of operations required for complete retinal reattachment, number of operations before retinectomy, use of silicone oil tamponade, location and extent of retinectomy, whether lensectomy was undertaken, and incidence of postoperative complications. Complete retinal reattachment was achieved in 52 of 56 patients (93%), with a mean follow-up of 25 months (range, 6-70 months). After retinal reattachment, visual acuity was improved or stabilized in 39 of 56 patients (70%). The mean number of operations for retinal detachment before diagnosis of PVR requiring retinectomy was 1.8 (range, 1-5). Patients undergoing radical anterior vitreous base dissection and lensectomy at the time of first retinectomy had a higher success rate than those who did not: 74% versus 38%, respectively (P = 0.011). Furthermore, tamponade with silicone oil had a higher success rate than tamponade with gas: 71% versus 18%, respectively (P = 0.002). Of the 56 patients, 9 (16%) had 1 or more of the following complications: keratopathy requiring penetrating keratoplasty (n = 4), glaucoma requiring aqueous shunt device (n = 3), and hypotony (n = 3). Silicone oil removal was performed in 26 of 45 patients (58%) before the last follow-up visit, with a 1 in 26 (4%) redetachment rate. When combined with anterior base dissection, inferior retinectomy may be useful in the surgical treatment of complex PVR-related retinal detachment. The authors show that with lensectomy, radical anterior base dissection, and inferior retinectomy, anatomic success rates are improved and visual function can be maintained. In addition, silicone oil offers an advantage over gas tamponade in these cases.
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              Functional outcome and prognostic factors in 304 eyes managed by retinectomy.

              This study was undertaken to relate the anatomic and functional results of patients who underwent retinectomy for complex retinal detachment (RD) to preoperative prognostic variables. Three hundred and four eyes of 302 patients whose surgery involved retinectomy were included in the analysis. All eyes had established proliferative vitreoretinopathy (PVR grade C). The main outcome measures were (1) postoperative visual acuity of 6/24 or better, (2) status of the retina at the end of follow-up, and (3) incidence of hypotony whilst under review. PVR was secondary to rhegmatogenous RD in 237 eyes (78%), posterior trauma in 51 eyes (16.8%), tractional RD in vasoproliferative vasculitides in 12 eyes (4%), acute retinal necrosis in 2 eyes and endophthalmitis in 2 eyes. Complete reattachment rate after one operation was 51%, with final complete reattachment success rate of 72%. The visual acuity improved in 138 eyes (45%), remained the same in 73 eyes (24%) and became worse in 89 cases (29%). Postoperative visual acuity of 6/24 or better was significantly associated with preoperative vision, the duration of silicone oil tamponade, silicone oil removal and retinectomy size. There was also some evidence of association between visual outcome and the number of clock hours of retinal detachment. Final retinal attachment was significantly associated with silicone oil removal and preoperative vision, and final hypotony was significantly associated with silicone oil removal. The incidence of sympathetic ophthalmia in our study was 0.09% (one case). Good functional outcome is possible following retinectomy surgery despite advanced pathology and often multiple surgical procedures. Retinal redetachment as a result of reproliferation and hypotony appear to be the main reasons for anatomical and functional failure. The clinical features we have identified as good indicators for improved final visual acuity such as shorter tamponade duration, removal of silicone oil, smaller retinectomy size, fewer previous operations and better preoperative vision are surrogate markers of less advanced PVR and should prompt retinal surgeons to consider retinectomy at an earlier stage in the process of PVR development. Clinicians should be aware of the small risk of sympathetic ophthalmia from complex retinal surgery.
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                Author and article information

                Journal
                Clin Ophthalmol
                Clin Ophthalmol
                opth
                clinop
                Clinical Ophthalmology (Auckland, N.Z.)
                Dove
                1177-5467
                1177-5483
                15 September 2020
                2020
                : 14
                : 2679-2686
                Affiliations
                [1 ]Department of Ophthalmology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece
                Author notes
                Correspondence: Brouzas Dimitrios Department of Ophthalmology, School of Medicine, National and Kapodistrian University of Athens , 10 G. Papandreou Str, Byron-Athens16231, Greece Email brouzas@yahoo.com
                Article
                241479
                10.2147/OPTH.S241479
                7501976
                4530e6e8-054d-4d59-af8e-4e871505347e
                © 2020 Dimitrios et al.

                This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms ( https://www.dovepress.com/terms.php).

                History
                : 08 December 2019
                : 23 July 2020
                Page count
                Figures: 2, Tables: 11, References: 22, Pages: 8
                Categories
                Original Research

                Ophthalmology & Optometry
                large retinectomies,proliferative vitreoretinopathy,silicone oil tamponade,perfluoropropane gas tamponade

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