Figure 17c. Large chronic retinal detachment and proliferative vitreoretinopathy in the left eye treated with vitrectomy, scleral banding, and intraocular silicone oil tamponade. (a) Axial T1-weighted MR image shows high-signal-intensity silicone oil in the vitreous cavity of the left globe and contour deformity from an encircling scleral band. (b) Axial T1-weighted MR image obtained with fat saturation shows a decrease in the signal intensity of the silicone oil. (c) Axial T2-weighted MR image shows chemical shift artifact at the interface between the silicone oil and vitreous fluid (arrow). (d) Axial T2-weighted MR image obtained with fat saturation shows low signal intensity of the silicone oil.