%0 Journal Article %A F. Nagy %T Changes in the Fundus Caused by Polycythaemia %D 1950 %R 10.1136/bjo.34.6.380 %J British Journal of Ophthalmology %P 380-384 %V 34 %N 6 %U https://bjo.bmj.com/content/bjophthalmol/34/6/380.full.pdf