dextroversion
Dextroversion is a version that turns both eyes to the patient's right.1 A version is any simultaneous movement of the two eyes in the same direction, and levoversion is the matching movement to the patient's left.1,2
The right lateral rectus and the left medial rectus carry the eyes into dextroversion. Electromyography shows both muscles increasing their activity as the eyes turn right, while activity in the right medial rectus and the left lateral rectus falls.3 The lateral rectus of one eye and the medial rectus of the other act as yoke muscles in side gaze, and the two medial recti pair up only during convergence.2
Sources (4)
- Yanoff and Duker, Ophthalmology (2023), ch. 11
- von Noorden and Campos, Binocular Vision and Ocular Motility, ch. 4
- von Noorden and Campos, Binocular Vision and Ocular Motility, ch. 6
- Rutstein, R. and Daum, K. (1997). Anomalies of Binocular Vision: Diagnosis & Management. St. Louis: Mosby.
Reviewed October 2026