We describe two patients with chronic unilateral ptosis and contralateral hemispheric arteriovenous malformations. Both patients were brought to our attention after a subacute or acute neurological deterioration. Analysis of prior photographs showed the ptosis progressed up to the time of presentation and significantly resolved following surgical removal of the arteriovenous malformation. The partially reversible and chronic nature of the ptosis in these two patients represents a particularly unusual forms of cerebral ptosis.