[Reversible visual impairment caused by leukemic fundus changes (author's transl)].

Monocular impaired visual acuity was the initial symptom of chronic myeloic leukemia in a 41 year old man. A subretinal infiltration had caused foveal retinal thinning. 3 1/2 months after the onset of therapy retinal thickness had normalized and the vision was fully restored.