Congenital cranial dysinnervation disorder.
95% are sporadic (rarely autosomal dominant).
Type I (>50%)
Limited AbDuction ± Esotropia in primary (mostly straight)
Limited ADDuction ± Exotropia in primary
Limited AbDuction and ADDuction ± Esotropia in primary
NB: Count the number of D’s to determine the type!
Can also be classified: esotropic, exotropic, or orthotropic Duane Syndrome
Duane syndrome can be associated with:
Duane Radial Dysplasia Syndrome
Surgery will not restore normal eye movements.
Do not resect as this will worsen retraction.
1. Type I with Esotropia
2. Type II with Exotropia
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