Wall-Eyed Bilateral Internuclear Ophthalmoplegia (WEBINO) in a Patient With a Unilateral Midbrain Infarction

INTRODUCTION: Wall-eyed bilateral internuclear ophthalmoplegia (WEBINO) is a rare variation of internuclear ophthalmoplegia associated with bilateral lesions of the medial longitudinal fasciculus. CASE REPORT: In this case, the edematous lesions of the ipsilateral midbrain infarction appeared to compress the contralateral medial longitudinal fasciculus, resulting in WEBINO. Treatment of focal cerebral edema caused by ischemic stroke is still under debate. However, in this case, antiedema treatment was implemented to prevent the sequelae of the edematous lesion caused by a midbrain infarction, and a relatively rapid improvement of ocular symptoms was observed. CONCLUSION: Herein, we report a rare case of WEBINO caused by a unilateral midbrain infarction in which the patient experienced edema-related neurological deficits. This case provides evidence that early antiedema therapy may benefit patients with similar presentations.