Intracranial hyperdense subarachnoid perfluorocarbon droplets after attempted retinal detachment treatment.

Unexpected intracranial foreign materials may pose a diagnostic dilemma. We present a case of a gunshot wound resulting in severe orbital trauma and open-globe injury. The patient was treated with vitreoretinal surgery and intravitreous perfluorocarbon liquid (PFCL) injection. Postoperative head computed tomography exam demonstrated migration of PFCL into the intracranial subarachnoid space.