References
- Bieischowsky A: Disturbances of the vertical motor muscles of the eyes. Arch Ophthalmol 20:175–200, 1938.
- Bieischowsky A: Lectures on Motor Anomalies, microfilm reprinted by University Microfilms, Ann Arbor, Mich, 1956.
- Helveston EM: A-exotropia, alternating sursumduction, and superior oblique overaction. Am J Ophthalmol 67:377–380, 1969.
- Burian HM, von Noorden GK: Binocular Vision and Ocular Motility. St Louis, CV Mosby Co, 1974, pp 201, 320–321.
- Guyton JS, Kirkman N: Ocular movement: I. Mechanics, pathogenesis and surgical treatment of alternating hypertropia (dissociated vertical divergence, double hypertropia) and some related phenomena. Am J Ophthalmol 41:438–476, 1956.