Lead poisoning can cause blindness.
D001766:Blindness / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007855:Lead Poisoning / Q000150:complications* / Q000453:epidemiology / Q000517:prevention & control; D007883:Legislation, Medical; D014481:United States; D014786:Vision Disorders / Q000209:etiology