magnetic resonance imaging ( mr ) of the optic nerves and chiasm was compared with computed tomography ( ct ) in 4 healthy volunteers , 4 patients without orbital or chiasmal abnormalities , and 4 patients with tumor ( anterior clinoid meningioma in 2 , optic nerve glioma in 1 , and optic nerve sheath meningioma in 1 ) .
C0029130
optic nerves
C0346326
optic nerve glioma