[Hyperviscosity syndrome and eye involvement].

10 patients with serum hyperviscosity syndrome of different etiologies were examined by fluorescein angiography of the ocular fundus. There was no exact correlation between the pathological findings in the fundus of cases with plasma cell dyscrasia and blood viscosity. Only papilledema and retinal venous engorgement were improved by lowering serum viscosity by plasmapheresis. The abnormal circulating immunoglobulins are an important factor in the genesis of the pathological changes in the retina of patients with plasma cell dyscrasia.