Bilateral cysticercosis of the optic nerve.

Bilateral cysticercosis of the optic nerves affected a man who presented with features suggestive of optic neuritis. Ultrasonography revealed bilateral sonolucent cystic lesions with central echo-dense, highly reflective structures behind the optic nerve heads. A subretinal cyst was present in one eye. Magnetic resonance imaging of the brain and orbit revealed multiple cysticerci in the brain, orbit, and eye. The subretinal cyst was removed by pars plana vitrectomy, and the other cysts resolved on treatment with albendazole.