title: Problems of the lacrimal system in children.
abstract: The lacrimal system is composed of various glands to produce tears and a drainage system for tear removal. The most common abnormality is a defect or blockage in the drainage system, a blocked nasolacrimal duct. Most of the evidence favors conservative management of this condition, reserving probing for those that fail to resolve by one year of age.
authors.affiliation: Pediatric Ophthalmology, Wills Eye Hospital, Philadelphia, Pennsylvania.
authors.forename: J H
authors.initials: JH
authors.lastname: Calhoun
mesh_terms: D002648:Child; D002675:Child, Preschool; D005402:Fistula; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007765:Lacrimal Apparatus / Q000002:abnormalities / Q000033:anatomy & histology / Q000502:physiology; D007766:Lacrimal Apparatus Diseases / Q000151:congenital*; D007767:Lacrimal Duct Obstruction / Q000151:congenital / Q000628:therapy; D009078:Mucocele / Q000150:complications / Q000209:etiology / Q000628:therapy; D009301:Nasolacrimal Duct; D013666:Tears / Q000378:metabolism