Duane syndrome is an unusual form of strabismus (crossed eye). The condition is present at birth and is often limited to one eye. At this time, researchers do not know what causes Duane syndrome.
Nerves from the brainstem act like wires carrying an electrical message to tell the eye muscles to move the eyes. In people with Duane syndrome, some of the nerves seem to connect to the wrong muscles. This causes one eye to receive the correct message, and the affected eye to move differently. Over time, some of the muscles of the affected eye become tight and add to eye movement problems. In most cases, treatment is unnecessary. However, surgery can help the affected eye move correctly to let the person see objects straight ahead. This surgery only improves the eye's limited range of motion.
Currently, the NEI does not have a fact sheet on this condition.
For more information from other health sites, please see the following webpages:
The National Human Genome Research Institute, Learning About Duane Syndrome
American Association for Pediatric Ophthalmology and Strabismus, Duane Syndrome
The Optometrists Network, Duane's Syndrome