MULTIMODAL IMAGING OF A CASE OF INTRARETINAL SILICONE OIL IN AN EYE WITH RETINOCHOROIDAL COLOBOMA: INSIGHTS INTO POSSIBLE ROUTES OF MIGRATION

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PURPOSE: We report multimodal imaging of intraretinal silicone oil in a case operated for coloboma-associated retinal detachment and provide imaging-based anatomical insights of the route on entry of intraretinal emulsified silicone oil droplets. METHOD: A 19-year-old man presented with gradual onset diminution of vision in the right eye for several years with worsening for 1 month. The patient was evaluated with examination, multimodal imaging, including fundus photography, optical coherence tomography, multicolor imaging, and green reflectance imaging. RESULT: The right eye showed large inferonasal chorioretinal coloboma sparing the fovea, with dull foveal reflex on color fundus photography, loss of foveal contour with multiple hyperreflective dots predominantly collected in the outer nuclear layer in the foveal region on optical coherence tomography, greenish hue in the foveal region with feather-like projections on multicolor imaging, and crystalline deposits on green reflectance imaging. This was diagnosed as collection of intraretinal silicone oil postretinal detachment surgery in a case of chorioretinal coloboma. CONCLUSION: We highlight a possible pathway for the intraretinal entry of emulsified silicone oil particles in a case of chorioretinal coloboma.

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