Prolonged course of bilateral acute idiopathic blind spot enlargement

: We report a patient with bilateral "acute idiopathic blind spot enlargement" (AIBSE) in whom visual symptoms and enlarged blind spots persisted for over 6 years and preceded the development of peripapillary hyperfluorescence on fluorescein angiography. These findings confirm the prolonged course that AIBSE can sometimes take and the suggestion that this rare disorder is due to peripapillary retinal dysfunction.