Optic nerve drusen.
D000293:Adolescent; D005128:Eye Diseases; D006801:Humans; D008297:Male; D008875:Middle Aged; D009422:Nervous System Diseases; D009896:Optic Atrophy / Q000209:etiology; D009900:Optic Nerve / Q000473:pathology; D010211:Papilledema / Q000209:etiology; D014786:Vision Disorders / Q000209:etiology