Oscillopsia following orbitotomy for intracranial tumor resection.

BACKGROUND: Oscillopsia is a visual phenomenon in which an individual perceives that their environment is moving when it is in fact stationary. In this report, we describe two patients with pulsatile oscillopsia following orbitocranial approaches for skull base meningioma resection. CASE DESCRIPTION: Two patients, both 42-year-old women, underwent orbitocranial approaches for resection of a right sphenoid wing (Patient 1) and left cavernous sinus (Patient 2) meningioma. Patient 1 underwent uncomplicated resection and was discharged home without neurologic or visual complaints; she presented 8 days later with pulsatile oscillopsia. This was managed expectantly, and MRA revealed no evidence of vascular pathology. She has not required intervention as of most recent follow-up. Patient 2 developed trochlear and trigeminal nerve palsies following resection and developed pulsatile oscillopsia 4 months postoperatively. After patching and corrective lens application, the patient's symptoms had improved by 26 months postoperatively. CONCLUSION: Oscillopsia is a potential complication following skull base tumor resection about which patients should be aware. Patients may improve with conservative management alone, although the literature describes repair of orbital defects for ocular pulsations in traumatic and with some developmental conditions.