[Isolated infiltration of optic nerves in the course of acute lymphoblastic leukemia]

51 years old male with acute lymphoblastic leukaemia in hematological remission was admitted to the hospital due to abrupt loss of vision. The cause of estimated complication was symmetrical infiltration of optical nerves. No other symptoms of leukaemia were observed at the time. In spite of combined radio- and chemotherapy no improvement was achieved. Two months later leukaemia relapse in the bone marrow was observed. The patient died of septic complications during reinduction treatment.