scholarly journals Visual loss may be due to silicone oil tamponade effect rather than silicone oil removal

2005 ◽  
Vol 89 (12) ◽  
pp. 1667-1667 ◽  
Author(s):  
P K Rani
Keyword(s):  
Visual Loss ◽  
Silicone Oil ◽  
Oil Removal ◽  
Silicone Oil Removal ◽  
Silicone Oil Tamponade ◽  
Tamponade Effect

scholarly journals Un-explained visual loss following silicone oil removal: results of the Pan American Collaborative Retina Study (PACORES) Group

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Jose A. Roca ◽  
Lihteh Wu ◽  
Maria Berrocal ◽  
Francisco Rodriguez ◽  
Arturo Alezzandrini ◽  
...  
Keyword(s):  
Visual Loss ◽  
Silicone Oil ◽  
Oil Removal ◽  
Silicone Oil Removal ◽  
Pan American

scholarly journals Unexplained Visual Loss After Silicone Oil Removal: A 7-Year Retrospective Study

2020 ◽  
Vol 9 (3) ◽  
pp. 1-13
Author(s):  
Cláudia Oliveira-Ferreira ◽  
Mariana Azevedo ◽  
Marta Silva ◽  
Ana Roca ◽  
João Barbosa-Breda ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Visual Loss ◽  
Silicone Oil ◽  
Oil Removal ◽  
Silicone Oil Removal

scholarly journals Phacoemulsification of primary cataract by the second stage after vitreoretinal surgery of PDR patients.

2021 ◽  
Vol 23 (5) ◽  
pp. 452-458
Author(s):  
Karina Igorevna Konovalova ◽  
Mikhail Mikhailovich Shishkin ◽  
Rinat Rustamovich Fayzrakhmanov
Keyword(s):  
Silicone Oil ◽  
Vitreoretinal Surgery ◽  
Second Step ◽  
Oil Removal ◽  
Iol Implantation ◽  
Second Stage ◽  
Silicone Oil Removal ◽  
Silicone Oil Tamponade ◽  
Group 2 ◽  
Group 1

BACKGROUND: The «gold standart» for surgical treatment of patients with proliferative diabetic retinopathy (PDR is vitreoretinal surgery. However, the question of the timing of the removal of primary cataract in this category of patients remains open.AIM: To evaluate the efficacy of phacoemulsification of primary cataract by the second stage after vitreoretinal surgery of PDR patientsMETHODS: 67 cases of surgery treatment of patients with PDR and complicated primary cataract were enrolled. This patients were divided into two groups depending on the treatment tactics. In the 1st group patients were subjected to a two–step surgical procedure: vitreoretinal surgery with silicone oil tamponade performed as the 1st step in their treatment; followed by the 2d step, phacoemulsifi tion surgery and silicone oil removal, and the IOL implantation, respectively. In the 2d group phacoemulsifi tion performed simultaneously with vitreoretinal surgery: phacoemulsification, IOL implantation, vitreoretinal surgery with silicone oil tamponade. The second step differed in the removal of silicone oil from the vitreous cavity.RESULTS: Visual functions improved in 88.6% of cases in group 1, and in 68.7% in group 2.CONCLUSIONS: Outcomes of the preliminary studies suggest that it is more viable to perform phacoemulsification surgery sometime later along with silicone oil removal on PDR patients with complicated primary cataract. This sequence of treatment procedure ensures a more gentle approach to the anatomic structures of the eye during the first stage (vitreoretinal surgery) and contributes to the reduction in the number of intraoperative and postoperative complications.

scholarly journals Intraocular silicone oil removal: timing, outcome, and silicone oil complications encountered

2019 ◽  
Vol 1 (1) ◽  
pp. 37-49
Author(s):  
Nurul Shima Ismail ◽  
Ling Kiet Phang ◽  
Teh Wee Min ◽  
Wan Haslina Wan Abdul Halim ◽  
Haslina Mohd Ali
Keyword(s):  
Silicone Oil ◽  
Optimal Timing ◽  
Oil Removal ◽  
Silicone Oil Removal ◽  
Long Duration ◽  
Number Of Patients ◽  
Pars Plana ◽  
Silicone Oil Tamponade

Introduction: Silicone oil is the preferred tamponade agent used in pars-plana vitrectomy for retinal detachment when a long duration of endotamponade is intended. Due to its possible long-term complications, removal of silicone oil (ROO) is recommended. Purpose: This study is done to evaluate the mean duration and complications of silicone oil tamponade, and the anatomical and visual outcomes after silicone oil removal. Study design: Retrospective study. Materials and methods: Retrospective review was done on 55 eyes of 55 patients, in which ROO was carried out at Hospital Sultanah Bahiyah in 2016 with a minimum six months follow-up postoperatively. Results: The duration of silicone oil tamponade in these eyes ranged from 1.0 to 55.5 months, with mean duration of 10.8 months (SD 7.74). Common complications of silicone oil tamponade observed were cataract in 30 eyes (54.5%), followed by secondary high intraocular pressure in 6 eyes (10.9%), and band keratopathy in 3 eyes (5.5%). Six eyes (10.9%) developed retinal re-detachment after oil removal.  The majority in the anatomically attached group post ROO (40 eyes, 81.6%) showed improvement of vision after ROO, with mean best corrected vision of LogMAR 1.38 (6/150) with silicone oil in situ to LogMAR 0.88 (6/48) at the latest follow-up. Conclusions: Although the recommended duration of silicone oil tamponade ranges from three to six months, the optimal timing for silicone oil removal still remains unknown. ROO is recommended due to oil-related complications, but the anatomical outcome should be evaluated as well. However, in our setting, with limited resources and time, and increasing number of patients indicated for silicone oil, it is impossible to comply with the recommended time for ROO and the timing is usually set on an individual basis.  

scholarly journals The Changes of Retinal Saturation after Long-Term Tamponade with Silicone Oil

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Bingsheng Lou ◽  
Zhaohui Yuan ◽  
Liwen He ◽  
Lixia Lin ◽  
Qianying Gao ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Silicone Oil ◽  
Oxygen Metabolism ◽  
Oil Removal ◽  
Silicone Oil Removal ◽  
Retinal Arterioles ◽  
Silicone Oil Tamponade ◽  
The Mean ◽  
Arteriovenous Difference

Purpose.To evaluate the effects of long-term tamponade with silicone oil on retinal saturation.Methods.A total of 49 eyes that received tamponade with silicone oil were included. The patients were divided into 3 groups (3–6 months, 6–9 months, and >9 months) according to the duration of silicone oil tamponade. Retinal oximetry was performed using the Oxymap system before and 2 months after silicone oil removal.Results.The mean retinal oxygen saturation before silicone oil removal was 107% ± 12% in the arterioles and 60% ± 10% in the venules, with an overall arteriovenous difference (AVD) of 47% ± 14%. The AVD in the >9-month group was significantly higher than that in the 3–6-month group (54% ± 16% versus 44% ± 11%,P=0.042). After silicone oil removal, the AVD in the >9-month group was significantly decreased (45% ± 9% versus 54% ± 16%,P=0.009); additionally, the arterioles were significantly wider than before surgery (10.8 ± 0.7 pixels versus 10.4 ± 0.9 pixels,P=0.015).Conclusions.The tamponade with silicone oil for more than 9 months will cause the alterations of retinal saturation and the narrowing of retinal arterioles, which may further interfere with the oxygen metabolism in the retina.

Ultrastructural effects of silicone oil on the clear crystalline lens of the human eye

2018 ◽  
Vol 28 (5) ◽  
pp. 566-572
Author(s):  
Wael Soliman ◽  
Mohamed Sharaf ◽  
Khaled Abdelazeem ◽  
Dalia El-Gamal ◽  
Allam Nafady
Keyword(s):  
Electron Microscopy ◽  
Epithelial Cells ◽  
Silicone Oil ◽  
Lens Epithelial Cells ◽  
Oil Removal ◽  
Electron Microscopic ◽  
Anterior Capsule ◽  
Lens Extraction ◽  
Silicone Oil Removal ◽  
Silicone Oil Tamponade

Purpose: To evaluate light and electron microscopic changes of the anterior capsule and its epithelium after clear lens extraction of vitrectomized myopic eyes with silicone oil tamponade. Methods: This prospective, controlled, non-randomized, interventional study included 20 anterior lens capsular specimens that were excised during combined clear lens extraction and silicone oil removal from previously vitrectomized highly myopic patients with silicone oil tamponade for previous retinal detachment surgeries. The specimens were examined via light microscopy and electron microscopy and compared with 20 anterior capsule specimens removed during clear lens extraction of non-vitrectomized highly myopic eyes. Results: Light microscopic examination of clear lens anterior capsule specimens of vitrectomized myopic eyes filled with silicone oil showed relatively more flat cells with irregular outline of lens’ epithelial cells with wide intercellular spaces, deeply stained nuclei, and multiple intracytoplasmic vacuoles. Scanning electron microscopy revealed collagenous surfaces filled with multiple pits, depressions, and abnormal deposits. Transmission electron microscopy revealed lens epithelial cells with apoptotic changes, many cytoplasmic vacuoles, and filopodia-like protrusions between lens epithelial cells and the capsule. Epithelial proliferation and multilayering were also observed. Conclusion: silicone oil may play a role in the development of apoptotic and histopathological changes in clear lens epithelial cells. Clarity of the lens at the time of silicone oil removal does not indicate an absence of cataractous changes. We found justification of combined clear lens extraction and silicone oil removal or combined phacovitrectomy when silicone oil injection is planned, but further long-term studies with larger patient groups are required.

Silicone oil removal options after cataract phacoemulsification

2020 ◽  
pp. 98-99
Author(s):  
A.M. Danilov ◽  
◽  
A.G. Grinev ◽  
M.B. Sviridova ◽  
◽  
...  
Keyword(s):  
Silicone Oil ◽  
Oil Removal ◽  
Silicone Oil Removal

Актуальность. Тампонада витреальной полости силиконовым маслом (СМ) или наличие остатков СМ при авитрии являются показаниями к их удалению, которое может быть выполнено различными методиками, нередко после факоэмульсификации катаракты. Цель. Изучить результаты удаления СМ через задний капсулорексис (ЗК) различными методами. 1. Изучить возможность удаления остатков СМ через задний капсулорексис при авитрии. 2. Провести апробацию удаления СМ через ЗК методом эффузии. 3. Провести апробацию удаления СМ через ЗК методом аспирации. Материал и методы. Под наблюдением находилось 18 пациентов, проходивших лечение в СОКБ №1. Результаты. Операции выполнены без осложнений в ближайшем и отдаленном послеоперационном периоде с улучшением зрительных функций. Выводы. 1. Изучены результаты удаления СМ через задний капсулорексис. 2. Удаление остатков СМ через ЗК при авитрии после факоэмульсификации позволяет повысить степень удовлетворенности пациентов результатами хирургического лечения. 3. Проведена апробация удаления СМ через ЗК методом эффузии, что позволяет качественнее удалять СМ, в том числе эмульгированные фрагменты. 4. Проведена апробация удаления СМ через ЗК методом аспирации, что сокращает время операции, позволяет в большем объеме удалять остатки эмульгированного СМ.

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