One-and-a-Half Syndrome 1 - One eye cannot move AT ALL horizontally 1/2 - The other eye can only abduct (can do only half of the possible horizontal movements) Where? Unilateral BRAINSTEM Lesion Possible causes:Tumors, Demyelination (Multiple Sclerosis), Stroke, Arteriovenous malformations By Dr. Gabriela Figueiredo Pucci @gabifpucci @neudrawlogy #OneAndAHalf #One #Half #Syndrome #diagnosis #neurology