Myotonic dystrophy mimicking bilateral internuclear ophthalmoplegia

Abstract

Myotonic dystrophy is a disorder with frequent ophthalmologic features. A 44-year-old black male with myotonic dystrophy is described. The patient displays a previously unreported type of motility disturbance in myotonic dystrophy in which there is an apparent limitation of motility that simulates a bilateral internuclear ophthalmoplegia. Myotonic dystrophy may be considered as another possible cause of pseudo-internu-clear ophthalmoplegia.

Key Words:

• Myotonic dystrophy
• internuclear ophthalmoplegia
• ocular motility
• ophthalmoplegia