A case of accidental injection of gentamicine into the left carotid artery
of an 18-year-old more is reported. Reactions occured three hours after inj
ection and included head movements, convulsions and ataxia. Temporary blind
ness of the right eye without visible ocular damage tested for four weeks a
nd did not recover completely. Intracarotid artery medication causes cerebr
ovascular endothelial injury :with edema and ischemic necrosis in the brain
. Pathophysiological mechanisms leading to temporary unilateral blindness a
re discussed.