Objective: To report 3 cases of pneumosinus dilatans of the sphenoid sinus associated with visual loss.
Materials and methods: Retrospective case series describing history of visual loss, visual examination, visual field deficits, and radiologic imaging.
Results: Three patients developed visual loss associated with pneumosinus dilatans of the sphenoid sinus.
Conclusions: Pneumosinus dilatans of the sphenoid sinus is a rare disorder that should be considered in patients presenting with unexplained visual loss.