A 21-year-old male patient with non-Hodgkin lymphoma of the ‘convoluted’ T cell type and marked involvement of skin and central nervous system presented in the early stages of the disease with subconjunctival bleeding of the eyeballs and massive serous retinal detachment near the optic disc in both eyes. In addition, there was a severe disseminated intravascular coagulation (DIC) caused by the lymphoma. It appears that the non-haemorrhagic retinal detachment on both sides is due to a neoplastic lymphocellular infiltration with high affinity of this malignant lymphoma to the central nervous system. Treatment of the underlying disease and of DIC with rapid onset of total remission lead to resorption of the conjunctival haemorrhages and fast reduction of the retinal detachment.