Leukemic involvement of the optic nerve.
D000293:Adolescent; D002648:Child; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D007945:Leukemia, Lymphoid / Q000473:pathology*; D008297:Male; D009900:Optic Nerve / Q000473:pathology*; D010524:Peripheral Nervous System Neoplasms / Q000473:pathology*; D014794:Visual Fields