興味ある経過を示した内頸動脈海綿静脈洞瘻

Carotid cavernous fistula with ophthalmologic signs on the contralateral side

　右外傷性内頸動脈海綿静脈洞瘻において両側眼球運動障害が出現し，特に健側の左眼に症状が顕著であった症例を経験したので，眼球運動障害の出現機序と瞳孔について神経解剖学的見地から考察を加えた。

A 45-year-old female with traumatic carotid cavernous fistula on the right side was observed. The accompanying ophthalmoplegia was more severe on the contralateral, left side. A peculiar hemodynamic changes in the cavernous sinus and its surroundings seemed to be responsible for the apparent discrepancy.

The pupil reaction was intact throughout the course of the disease in spite of the total ophthal-moplegia on the left side. The sparing of the infe-rior oculomotor nerve branch appeared to be the cause of this phenomenon.