Hội chứng Duane Type II

Duane syndrome type II is a extremely rare motility disturbance of Duane syndrome that is characterized by globe retraction and narrowIng of the lid fissure in actual or attempted adduction, as well as horizontal limitation of eye movement. partial, or rarely complete, deficiency of adduction of the affected eye; a sharply oblique movement of the affected eye either up (upshoot) and in or down (dowshoot) and in on adduction; The author present a case of Duane syndrome type II with exotropia and downshoot and optional procedure was lateral rectus recession with Y split of the muscle get a good result.