抄録
When the eye socket is damaged for various reasons, the oculomotor nerve, the trochlear nerve, the abducens nerve, the first trigeminal nerve branch and the optic nerve can be damaged, and the orbital-apex syndrome is exhibited. Reported causes for this include external injury, leukemia, cancer, mycosis and Hodgkin’s disease, and reports of orbital-apex syndrome due to sphenoidal sinus cysts are rare. We report herein on our rare experience with a 73 years old male patient in whom a sphenoidal sinus cyst caused orbital-apex syndrome. His visual function was highly inhibited. Endoscopic sinus surgery on day 8 enabled improvement in the visual function. We present herein the course of this case with several references to previous literature.