biostudies-literatureUnknown16(1)Kinoshita M<h4>Introduction</h4>Proliferative vitreoretinopathy (PVR) is a condition in which proliferation forms after rhegmatogenous retinal detachment (RRD) surgery or old RRD, and sometimes, PVR can occur under silicone oil (SO). Here, we report 2 cases of PVR in which we evaluated preoperative B-scan images of proliferation under SO using ultra-widefield swept-source OCT (UWF-SS-OCT).<h4>Case presentation</h4>The first case was a 61-year-old male who presented with PVR under SO tamponade after multiple pars plana vitrectomies (PPVs) at the previous hospital, and the second case was a 23-year-old man patient who was diagnosed with Coats disease in childhood and presented with PVR under SO after PPV for total RRD at our hospital. B-scan images of UWF-SS-OCT provided findings of epiretinal two-layered proliferation or emulsified SO in the peripheral area.<h4>Conclusion</h4>UWF-SS-OCT is useful for preoperative assessment of the proliferation of PVR before SO removal. In addition, peculiar proliferation may occur in the eye under SO.Case reports in ophthalmology57-61https://www.ebi.ac.uk/biostudies/studies/S-EPMC11842007biostudies-literatureUltra-Widefield OCT Images of Proliferative Vitreoretinopathy under Silicone Oil.PMC11842007Sakimoto SNishida KKinoshita MShiraki NKanai MSuzue MfalseUltra-Widefield OCT Images of Proliferative Vitreoretinopathy under Silicone Oil.<h4>Introduction</h4>Proliferative vitreoretinopathy (PVR) is a condition in which proliferation forms after rhegmatogenous retinal detachment (RRD) surgery or old RRD, and sometimes, PVR can occur under silicone oil (SO). Here, we report 2 cases of PVR in which we evaluated preoperative B-scan images of proliferation under SO using ultra-widefield swept-source OCT (UWF-SS-OCT).<h4>Case presentation</h4>The first case was a 61-year-old male who presented with PVR under SO tamponade after multiple pars plana vitrectomies (PPVs) at the previous hospital, and the second case was a 23-year-old man patient who was diagnosed with Coats disease in childhood and presented with PVR under SO after PPV for total RRD at our hospital. B-scan images of UWF-SS-OCT provided findings of epiretinal two-layered proliferation or emulsified SO in the peripheral area.<h4>Conclusion</h4>UWF-SS-OCT is useful for preoperative assessment of the proliferation of PVR before SO removal. In addition, peculiar proliferation may occur in the eye under SO.2025-01-01T00:00:00Z2025 Jan-Dec2025-04-04T07:32:37.465Z2025-04-04T07:32:37.465ZS-EPMC118420073998153710.1159/000542391