Macular Changes on Optical Coherence Tomography Before, During, and After Silicone Oil Tamponade for Macula

Assess changes on spectral domain optical coherence tomography (OCT) before, during, and after removal of silicone oil (SO). 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. 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). SO tamponade causes foveal flattening and thinning of the inner retinal layers, which is reversible on removal