[Postsurgical WEBINO, a new form of this syndrome].

CASE REPORT: A 20 year-old woman was submitted to resection of an ependymome of the fourth ventricle. After surgery the patient began to refer diplopia and oscillopsia. WEBINO syndrome (wall-eyed bilateral internuclear ophthalmoplegia), vertical nystagmus and skew deviation were diagnosed. DISCUSSION: WEBINO syndrome is considered a special form of bilateral internuclear ophthalmoplegia. It is characterized by bilateral absence of adduction, nystagmic abduction of both eyes, convergence deficiency and frequently exotropia. Ischemic, demyelinating and infectious etiologies have been described, but to our knowledge this is the first report of a postsurgical form of this syndrome.