1. Leber's familial optic atrophy.. The only feature common to them all was papilloedema and secondary optic atrophy. These authors;Phil. Trans,1713
2. Cushing, H., and Walker, C. B. (1912). Arch. Ophthat., 41, 559.
3. Hughes, E. B. C. (1943). Trans. Ophthal. Soc. U.K., 63, 143.
4. Quoted by H. M. Traquair, Intro. to Clin;Josefson, A.;Perimetry, London,1916
5. Textbook of Nervous;Oppenheim, H.;Diseases,1911