Lacrimal Duct Defect, also known as nasolacrimal duct obstruction, is related to dacryocystitis and growth retardation, deafness, femoral epiphyseal dysplasia, and lacrimal duct obstruction. An important gene associated with Lacrimal Duct Defect is IGSF3 (Immunoglobulin Superfamily Member 3). The drugs Silicon and Dexamethasone have been mentioned in the context of this disorder. Affiliated tissues include eye and kidney, and related phenotypes are sinusitis and periorbital edema