Incidence of retinal re-detachment after removal of silicone oil Tamponade in cases of proliferative vitreoretinopathy

Zaheer, Waqas; Iqbal, Kashif; Usman, Maria

doi:10.5455/jpma.45900

Cited by 2 publications

(1 citation statement)

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“…However, there is still a distinct group of patients in real-life practice who, for various reasons, must live with long-term or even permanent SO tamponade. In such patients, retinal re-detachments, severe proliferative vitreoretinopathy (PVR), repeated vitreous hemorrhage, or continually low intraocular pressure occur after SO removal ( 5 , 6 ). These are called SO-dependent eyes ( 7 ).…”

Section: Introductionmentioning

confidence: 99%

Intraocular lens power calculation for silicone oil-dependent eyes

Wang,

Yang

et al. 2023

Front. Med.

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BackgroundSilicone oil tamponade is widely used in vitreoretinal surgery. In some cases, silicone oil may not be extracted for a long time or even permanently and is referred to as silicone oil-dependent eyes. In this study, we aimed to deduce a theoretical formula for calculating intraocular lens power for silicone oil-dependent eyes and compare it with clinical findings.MethodsA theoretical formula was deduced using strict geometric optical principles and the Gullstrand simplified eye model. The preoperative and postoperative refractive statuses of patients with silicone oil-dependent eyes who underwent intraocular lens implantation were studied (Group A, n = 13). To further test our derived theoretical formula, patients with silicone oil tamponade and first-stage intraocular lens implantation were included (Group B, n = 19). In total, 32 patients (32 eyes) were included in the study.ResultsIn group A, the calculated intraocular lens power based on our formula was 24.96 ± 3.29 diopters (D), and the actual refraction of the patients was 24.02 ± 4.14D. In group B, the theoretical intraocular lens power was 23.10 ± 3.08D, and the clinical intraocular lens power was 22.84 ± 3.42D. There was no significant difference between the theoretical and clinical refractive powers, and the intraclass correlation coefficient was 0.771 for group A and 0.811 for group B (both p ≤ 0.001). The mean absolute error for silicone oil-dependent eyes of the formula was 1.66 ± 2.09D. After excluding data for two patients with a flat cornea (corneal refractive power < 42D), the mean absolute error decreased to 0.83 ± 0.62D.ConclusionA strong correlation between the theoretical and clinical intraocular lens powers was observed, and the formula we deduced can be used to calculate the intraocular lens power for silicone oil-dependent eyes. This formula will help clinicians select a more appropriate intraocular lens for patients with silicone oil-dependent eyes, especially when the corneal refractive power is ≥42D.

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Section: Introductionmentioning

confidence: 99%

Intraocular lens power calculation for silicone oil-dependent eyes

Wang,

Yang

et al. 2023

Front. Med.

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Comparison of Face-down Positioning Durations Following Silicone Oil Tamponade

Zubricky¹,

Platt²

2022

Ophthalmic Surg Lasers Imaging Retina

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OBJECTIVE: To analyze the rate and timing of retinal redetachments and other complications following pars plana vitrectomy for retinal detachment repair with silicone oil tamponade and the effect of face-down positioning duration on these endpoints. MATERIALS AND METHODS: A retrospective study was performed on patients with retinal detachment repair via pars plana vitrectomy with silicone oil tamponade between 2015 and 2020. Surgery was performed by 10 physicians associated with a private retina practice in Cleveland, Ohio. Duration of postoperative face-down positioning was noted and patients were grouped by short (≤6 days) or long (≥7 days) durations. Outcome variables were retinal re-detachment, epiretinal membrane formation, cataract formation, and other complications. Timing and frequency of outcomes were noted and statistical analysis was performed. RESULTS: The study was composed of 227 eyes. The mean age of patients was 62.09±13.65 years with 143 (63.00%) male and 84 (37.00%) female. Of the initial detachments, 63 (27.88%) were macula-on and 163 (72.12%) were macula-off. Overall, 128 (56.39%) patients were given instructions for face-down positioning for 6 days or less and 99 (43.61%) patients for 7 days or more. Retinal redetachment was seen in 42.19% of patients with face-down positioning ≤6 days and 29.29% of patients with face-down positioning ≥7 days ( P = .045). No significant difference was found in epiretinal membrane formation or cataract formation ( P >.05). CONCLUSION: There was a lower rate of redetachment in patients who kept a face-down position for ≥7 days compared with ≤6 days. Further study to determine causality between duration of postoperative face-down positioning and retinal redetachment is recommended. [ Ophthalmic Surg Lasers Imaging Retina . 2022;53:285–292. ]

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Incidence of retinal re-detachment after removal of silicone oil Tamponade in cases of proliferative vitreoretinopathy

Cited by 2 publications

References 0 publications

Intraocular lens power calculation for silicone oil-dependent eyes

Intraocular lens power calculation for silicone oil-dependent eyes

Comparison of Face-down Positioning Durations Following Silicone Oil Tamponade

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