Type III Duane Retraction Syndrome and Monocular Elevation Deficiency, Simultaneous Presentation in a 16-year-old...

Duane Retraction Syndrome (DRS) and Monocular Elevation Deficiency (MED) are two distinct congenital strabismus entities that have not been reported simultaneously until now. Thirty percent of individuals with DRS present with various congenital ocular and non-ocular anomalies. A 16-year-old girl presented with right eye ptosis and ocular deviation since birth. The patient's hypotropia increased in the upward gaze. She also exhibited small-angle exotropia in the primary position, along with the limitation of both abduction and adduction. The patient had globe retraction and increased ptosis in adduction. Strabismus manifestation in the patient was consistent with concurrent type III DRS and MED in the right eye.