Fig. 1
a Computed tomography (CT) revealed vague subarachnoid hemorrhage along with left Sylvian fissure (arrow) and subdural hematoma over bilateral frontal areas. b Magnetic resonance imaging (MRI) showed an aneurysm located in the bifurcation of right internal carotid artery and posterior communicating artery (arrow). c, d The relationship between days after surgery, intracranial pressure, cerebral perfusion pressure and limitation of extraocular movement are illustrated. The lateral gaze limitation of both eyes had a gradually improvement day by day with the decreasing intracranial pressure. **: ICP intracranial pressure, CPP cerebral perfusion pressure. *: day 1 means day 1 after the surgery. #: “R” means right eye and “L” means “left” side