1. AsirroN, N., WARD, B., and SERPELL, G. (1953). British Journal of Ophthalmology, 37, 513, CAMPBELL, F. W. (1951). Trans. ophthal. Soc. U.K., 71, 287. M1CHAELSON, I. C. (1948). Ibid., 68, 137.
2. Retinal Circulation in Man and Animals;AsirroN, N.; WARD, B.; SERPELL, G.,1953