Botulinum toxin in the management of acquired motor fusion deficiency

Abstract

Acquired disruption of motor fusion is a rare condition characterized by intractable diplopia. Management of these patients is extremely difficult. Prisms in any combination or even surgery may not help relieve their symptoms. We describe a longstanding case of acquired motor fusion disruption which was managed successfully with botulinum toxin injection.

Keywords

• Acquired motor fusion deficiency
• botulinum toxin