• Fifty-six patients with cysticercosis and neuro-ophthalmic signs were examined by me during an 11-year period. Their symptoms generally reflected increased intracranial pressure caused by hydrocephalus, subacute meningitis, cerebral masses, or a combination of these effects. Papilledema (37 patients) was the commonest sign, with pupillary abnormalities (16 patients) and nystagmus (12 patients) frequently encountered. Cysticercosis is a relatively benign, although episodic, disease, as long as secondary obstructive hydrocephalus is promptly diagnosed and treated by CSF shunting procedures.