1. Hurtt J, Rasicovici A, Windsor C.Comprehensive Review of Orthoptics and Ocular Motility: Theory, Therapy, and Surgery, 2nd ed. St. Louis: CV Mosby; 1977, pp. 104, 149, 118, 117–120, 153, 233–236.
2. Louis Émile Javal (1839–1907): The Father of Orthoptics
3. von Noorden GK.Binocular Vision and Ocular Motility, 2nd ed. St. Louis: CV Mosby; 1980, pp. 75–77, 99–100.
4. Historical Vignette: Ernest Edmund Maddox (1860–1933): Master Surgeon, Inventor, and Investigator