Absent Relative Afferent Pupillary Defect in an Asymptomatic Case of Lateral Chiasmal Syndrome from Cerebral Aneurysm

Abstract

A clinically detectable relative afferent pupillary defect may be absent in unilateral optic nerve pallor and/or visual field loss and does not preclude the need to attempt to identify an underlying etiology. Neuroradiological examination of orbital and cranial structures is an imperative protocol in the appropriate management of this potential life- and vision-threatening condition.