scholarly journals Case Series of Inappropriate Concentration of Intraocular Sulfur Hexafluoride

2018 ◽  
Vol 9 (2) ◽  
pp. 405-410 ◽  
Author(s):  
Piotr Kanclerz ◽  
Andrzej Grzybowski
Keyword(s):  
Sulfur Hexafluoride ◽  
Silicone Oil ◽  
Case Series ◽  
Vitreoretinal Surgery ◽  
Calculation Error ◽  
Gas Concentration ◽  
Care Training ◽  
Silicone Oil Tamponade ◽  
Intravitreal Gas ◽  
Patient Safety Incidents

Due to high complexity, vitreoretinal surgery presents a higher number of patient safety incidents compared with other ophthalmic procedures. Intraocular gases are one of the most useful adjuncts to vitrectomy and surprisingly, surgeons commonly admit to having occasional problems with incorrect gas concentration. The aim of this study is to present a consecutive case series of patients with improper concentration of sulfur hexafluoride (SF6) applied during vitrectomy. Three patients underwent 27-gauge vitrectomy and at the end of surgery inappropriate dilution of 100% SF6 was administered. It was attributed to a calculation error, change in the gas supplier, or increased partial pressure of SF6 before dilution. Postoperatively, due to IOP increase, two eyes required intravitreal gas-air exchange. Subsequently, cataract surgery was performed in one eye with concomitant vitrectomy and silicone oil tamponade due to retinal detachment. To prevent such complications, we suggest using intraocular gases with great care, training of ophthalmic personnel, and prompting manufacturers to provide SF6 in a prepared concentration of 20%.

Direct Transretinal Removal of Subfoveal Perfluorocarbon Liquid: The Role and Timing of Internal Limiting Membrane Peeling

2017 ◽  
Vol 27 (2) ◽  
pp. 249-252 ◽  
Author(s):  
Stefano De Cillà ◽  
Micol Alkabes ◽  
Paolo Radice ◽  
Elisa Carini ◽  
Carlos Mateo
Keyword(s):  
Retinal Detachment ◽  
Silicone Oil ◽  
Case Series ◽  
Vitreoretinal Surgery ◽  
Internal Limiting Membrane ◽  
Perfluorocarbon Liquid ◽  
Ilm Peeling ◽  
The Status ◽  
Anatomic Results ◽  
Silicone Oil Tamponade

Purpose To describe a case series including 4 patients undergoing direct transretinal aspiration of subfoveal perfluorocarbon liquid (PFCL) and internal limiting membrane (ILM) peeling after macula-off retinal detachment surgery. Methods Four patients who had undergone vitreoretinal surgery due to primary rhegmatogenous retinal detachment were further treated because of retained subfoveal PFCL. Direct transretinal aspiration of PFCL through a self-sealing foveal retinotomy was performed in all cases using a 41-G needle placed on the top of the bubble. The ILM was peeled off prior to and after PFCL removal in 2 cases, respectively. Optical coherence tomography (OCT) scans were obtained preoperatively and postoperatively to assess the status of the macula. Results Subfoveal PFCL was successfully removed in all cases. Two patients had silicone oil tamponade at the time of the second surgery, which was temporarily removed in both cases and then reapplied in one. Best-corrected visual acuity improved in all cases. No postoperative macular hole was observed by OCT. Conclusions Direct transretinal aspiration of subfoveal PFCL with a 41-G cannula combined with conventional ILM peeling is a safe and effective technique to avoid long-term damage to the retinal layers with good functional outcomes. Performing the ILM peeling immediately before or after the PFCL aspiration does not seem to influence anatomic results.

scholarly journals Biometry in Silicone Oil Filled Eyes. A Review

2021 ◽  
Vol 18 (4) ◽  
pp. 769-777
Author(s):  
A. N. Kulikov ◽  
E. V. Danilenko ◽  
A. R. Kuznetsov
Keyword(s):  
Silicone Oil ◽  
Vitreoretinal Surgery ◽  
Power Calculation ◽  
Calculation Error ◽  
Toxic Reaction ◽  
Low Coherence ◽  
Iol Power Calculation ◽  
Significant Term ◽  
Iol Power ◽  
Silicone Oil Tamponade

The “gold standard” of modern vitreoretinal surgery is silicone oil tamponade of the vitreous cavity. The lens opacity development is in the list of complications of prolonged silicone oil eye filling (from 2 weeks to 2 years). Polydimethylsiloxanes hydrophobicity, direct contact with the front of the silicone bladder, macrophage and toxic reaction, trophic disturbances are the causes leading to the cataract initiation. This makes the problem of cataract surgery and preliminary intraocular lens calculation in silicone oil filled eyes before its removing very relevant as well as cloudy retina visualization and the necessity of minimization of number of operations through their combination. Certainly, the main error in IOL power calculation is associated with axial length measurement inaccuracy, as the most significant term of an equation. Silicone oil filled eyes biometry errors, and, consequently, postoperative refraction biases remain unresolved problem until now. To date authors report only 58 % of cases in which target refraction was achieved after combined surgery. Some researchers figure out that average calculation error after phacoemulsification with IOL implantation in avitreal eyes was 0.8 D despite of the optical biometry usage. Today it is represented by several methods: partial coherent interferometry, optical low-coherence reflectometry and optical coherence tomography, which are implemented in devices such as IOLMaster 500, Lenstar LS 900 and IOLMaster 700, which have their own characteristics and measurement accuracy. Their advantages as well as creation an accurate IOL calculation method for silicone oil filled eyes could reduce postoperative refraction error that outline significant medical and social problem.

Macular Changes on Optical Coherence Tomography Before, During, and After Silicone Oil Tamponade for Macula-On Retinal Detachment: A Case Series

2018 ◽  
Vol 2 (5) ◽  
pp. 297-301 ◽  
Author(s):  
Wajiha J. Kheir ◽  
Carl-Joe Mehanna ◽  
Mona Koaik ◽  
Ziad Bashshur
Keyword(s):  
Optical Coherence Tomography ◽  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Ganglion Cell Layer ◽  
Silicone Oil ◽  
Case Series ◽  
Qualitative Assessment ◽  
Optical Coherence ◽  
Time Points ◽  
Silicone Oil Tamponade

Purpose: Assess changes on spectral domain optical coherence tomography (OCT) before, during, and after removal of silicone oil (SO). Methods: Retrospective series of patients who underwent SO tamponade for macula-on rhegmatogenous retinal detachment. OCT scans of the affected eye were taken before, during, and 3 months after SO tamponade. Qualitative assessment of foveal contour and quantitative comparison of OCT parameters (central macular, cube, ganglion cell layer [GCL], and outer retinal thicknesses) were done between 3 time points. Results: Ten eyes of 9 patients were included. Flattening of the foveal contour during SO tamponade was completely reversed after SO removal. Average cube and GCL thicknesses decreased with SO tamponade and increased after SO removal ( P = .01 and P = .02, respectively). Outer retinal thicknesses did not vary among 3 time points ( P = .09). Conclusions: SO tamponade causes foveal flattening and thinning of the inner retinal layers, which is reversible on removal.

scholarly journals Calcification of hydrophilic acrylic intraocular lens in eyes with silicone oil tamponade - an interventional case series report

2015 ◽  
Vol 94 (6) ◽  
pp. 625-627 ◽  
Author(s):  
Cosmin Rosca ◽  
Mihnea Munteanu ◽  
Irina Tamasoi ◽  
Zarko Petrovic ◽  
Nicolae Balica ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Silicone Oil ◽  
Case Series ◽  
Case Series Report ◽  
Hydrophilic Acrylic Intraocular Lens ◽  
Silicone Oil Tamponade ◽  
Series Report

scholarly journals Is There a Role for Long-Term Silicone Oil Tamponade for More than Twelve Months in Vitreoretinal Surgery?

2011 ◽  
Vol 226 (s1) ◽  
pp. 36-41 ◽  
Author(s):  
Theodor Stappler ◽  
George Morphis ◽  
Cristina Irigoyen ◽  
Heinrich Heimann
Keyword(s):  
Silicone Oil ◽  
Vitreoretinal Surgery ◽  
Silicone Oil Tamponade

scholarly journals Effect of Duration of Silicone Oil Tamponade on Retinal Structure after Rhegmatogenous Retinal Detachment Surgery

2021 ◽  
pp. 1-8
Author(s):  
Chloé Dubroux ◽  
Julia Salleron ◽  
Karine Angioi-Duprez ◽  
Jean-Paul Berrod ◽  
Jean-Baptiste Conart
Keyword(s):  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Case Series ◽  
Retinal Layer ◽  
Before And After ◽  
Silicone Oil Tamponade ◽  
Group 2 ◽  
Change In Mean ◽  
Group 1

<b><i>Purpose:</i></b> The aim of the study was to investigate the effect of tamponade duration on retinal changes induced by silicone oil (SO) in patients who underwent successful rhegmatogenous retinal detachment (RRD) surgery. <b><i>Methods:</i></b> Retrospective comparative case series of 68 patients who underwent SO tamponade for RRD. Patients were divided into 2 groups based on timing of SO removal: &#x3c;6 months (group 1, <i>n</i> = 34) versus ≥6 months (group 2, <i>n</i> = 34). The main outcome measure was the change in central macular, inner, and outer retinal layer thickness (CMT, IRLT, and ORLT) before and after SO removal (SOR). <b><i>Results:</i></b> The median tamponade duration was 4 [Clin Ophthalmol. 2016;10:471–6, Zhonghua Yan Ke Za Zhi. 1997 Jan;33(1):39–41] months in group 1 and 8 [Arch Ophthalmol. 1994 Jun;112(6):778–85, Retina. 2004 Dec;24(6):871–7] months in group 2 (<i>p</i> &#x3c; 0.001). The mean CMT significantly increased from 245.3 ± 22.2 μm and 238.8 ± 41.6 μm under SO to 281.3 ± 60.2 μm and 259.0 ± 43.5 μm after SOR in group 1 (<i>p</i> = 0.009) and in group 2 (<i>p</i> = 0.007), respectively. Automated segmentation measurement revealed a significant increase in mean IRLT (<i>p</i> = 0.014 and <i>p</i> = 0.013) but no change in mean ORLT (<i>p</i> = 0.080 and <i>p</i> = 0.257) in both groups. After adjustment, there was no difference between the 2 groups in terms of mean final CMT, IRLT, and ORLT and mean retinal thickness changes after SOR. There was also no correlation between the tamponade duration and macular microstructural changes or visual recovery. <b><i>Conclusion:</i></b> SO tamponade causes a thinning of all retinal layers, mainly affecting the inner retinal layer. However, these changes resolved following SO extraction and were not affected by longer tamponade duration.

scholarly journals Posttraumatic Bacillus cereus Endophthalmitis: Clinical Characteristics and Antibiotic Susceptibilities

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Feng Mei ◽  
Jiaqi Lin ◽  
Manli Liu ◽  
Yao Yang ◽  
Xiaofeng Lin ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Clinical Characteristics ◽  
Silicone Oil ◽  
Case Series ◽  
Visual Outcomes ◽  
Antibiotic Susceptibilities ◽  
Therapeutic Measures ◽  
Silicone Oil Tamponade ◽  
Better Than

Purpose. To report the clinical characteristics, antibiotic susceptibilities, and visual outcomes of patients with posttraumatic endophthalmitis caused by Bacillus cereus. Methods. In this retrospective, noncomparative case series, the medical records of eyes with culture-proven Bacillus cereus endophthalmitis treated from January 2016 to December 2019 at a referral center were reviewed. Clinical features, antibiotic susceptibilities, and visual outcomes were assessed. Results. A total of 19 eyes of 19 patients were identified. Three patients progressed to orbital cellulitis. Vitrectomy was performed in 13 eyes, and 11 required silicone oil tamponade. Finally, seven eyes underwent silicone oil removal surgery during follow-up. Only two patients retained a visual acuity better than FC. Four patients underwent evisceration, and three patients had NLP. The cultured Bacillus cereus was sensitive to levofloxacin, ofloxacin, tobramycin, and neomycin at 100%. Conclusions. The visual outcomes of posttraumatic Bacillus cereus endophthalmitis were generally poor regardless of the prophylactic and therapeutic measures administered. Vitrectomy combined with silicone oil tamponade could help to save the eyeball. Bacillus cereus has a good susceptibility to ofloxacin, levofloxacin, tobramycin, and neomycin; therefore, fluoroquinolones and aminoglycosides can be used to treat Bacillus cereus infection.

VITREORETINAL SURGERY WITH SILICONE OIL TAMPONADE IN PRIMARY UNCOMPLICATED RHEGMATOGENOUS RETINAL DETACHMENT

Retina ◽  
2016 ◽  
Vol 36 (10) ◽  
pp. 1906-1912 ◽  
Author(s):  
Joelle Antoun ◽  
Georges Azar ◽  
Elyse Jabbour ◽  
Hampig Raphael Kourie ◽  
Elise Slim ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Vitreoretinal Surgery ◽  
Silicone Oil Tamponade

scholarly journals Surgery for Combined Hamartoma of the Retina and Retinal Pigment Epithelium

2021 ◽  
pp. 778-783
Author(s):  
Charlotte Maria van der Sommen ◽  
Saskia Helena Margaretha van Romunde ◽  
Koen-Willem Adriaan van Overdam
Keyword(s):  
Visual Acuity ◽  
Retinal Pigment Epithelium ◽  
Silicone Oil ◽  
Pigment Epithelium ◽  
Retinal Pigment ◽  
Vitreoretinal Surgery ◽  
Internal Limiting Membrane ◽  
Epiretinal Membranes ◽  
Vitreous Cortex ◽  
Silicone Oil Tamponade

There is no consensus on whether and when surgical treatment is indicated for combined hamartoma of the retina and retinal pigment epithelium (CHRRPE). We aim to discuss the benefits of surgical intervention and techniques that may improve the outcome. A 24-year-old man experienced progressive visual loss for 6 months in his left eye due to CHRRPE. At presentation, visual acuity was 1.3 LogMAR and fundoscopy revealed extensive tractional pre- and epiretinal membranes, subretinal exudation, and a vasoproliferative tumor in the inferior periphery. A complete vitrectomy was performed, while paying special attention to vitreous shaving at the vitreous base and removal of vitreoschisis-induced vitreous cortex remnants (VCR) from the retinal surface posterior to the vitreous base. Tractional membranes and internal limiting membrane were peeled, and the vasoproliferative tumor was excised. Silicone oil tamponade was removed 11 weeks after surgery. No intra- or postoperative complications occurred. Visual acuity improved to 0.8 LogMAR and remained stable for 48-month follow-up. Vitreoretinal surgery can prevent complications that occur with CHRRPE. In addition, visual function may improve even if the initial visual acuity is low. Timely and complete vitrectomy with extensive membranectomy and detection and removal of VCR is recommended to avoid complications in challenging CHRRPE.

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