A Comprehensive Guide To Duane Syndrome

Subtypes Of Duane Syndrome

Although there are just three major types of Duane syndrome, this condition can be further broken down into subtypes, based on how the eyes look when the patient looks straight. As previously mentioned, Duane syndrome affects just one eye more often than it does both. Based on this information, the left eye is the affected eye more often than the right, although researchers are unsure as to why this is the case. Thus, the left eye is most often what differentiates the subtypes.

Subtype A occurs when the patient’s affected eye is turned inwards, called esotropia. In subtype B, the affected eye is turned outwards, called exotropia. The final subtype, subtype C, occurs when the patient’s eyes are in a straight position.

Continue reading for information on additional symptoms and indicators of Duane syndrome.