Two cases of intracranial penetration of a plastic or wooden chopstick
via the optic canal are described. CT scans showed the chopsticks as
linear hypodense structures in the suprasellar cistern contiguous with
the optic canal. In one case, MR imaging was performed, which clearly
depicted the foreign body and adjacent brain structures. Although the
y are extremely rare, transorbital intracranial penetrating injuries v
ia the optic canal require physicians' awareness.