Cortical Blindness After Cerebral Angiography.

Kwon, II Taek; Nam, Ki Ryong; Kim, Bong Cheol

Case Report

Journal of the Korean Ophthalmological Society 1992;33(12):1238-1242.
Published online December 1, 1992.

Cortical Blindness After Cerebral Angiography.

II Taek Kwon, Ki Ryong Nam, Bong Cheol Kim

Department of Ophthalmology, College of Medicine, Soonchunhyang University Chenan, Korea.

뇌혈관조영술 후 발생한 피질맹 1 예

권일택(Il Taek Kwon),남기룡(Ki Ryong Nam),김봉철(Bong Cheol Kim)

Abstract

Cortical blindness means visual loss caused by bilateral destruction of visual cortex. Cortical blindness can develop after cerebral angiography due to hypertonic contrast medium which open the blood-brain barrier and then alternate the function of visual cortex transiently. About 30 minutes after injection of contrast medium (Ultravist 370(R)) during cerebral angiography, the patient complained of decrease of visual acuity. And 3 hours later, evaluation revealed that she could not see even the light. But her vision began to improve after 19 hours and recovered completely after 7 days. MRI taken at 12 hours after cerebral angiography showed high signal intensities in the both occipital lobes. But in repeated MRI study, which was taken after 3 days, previously noted high densities were completely disappeared. So we diagnosed this case as cortical blindness caused by hypertonic contrast medium.

Key Words: Cerebral angiography;Cortical blindness;Recovered completely