title: The results of late probing in congenital nasolacrimal duct obstruction.
abstract: OBJECTIVE
  To evaluate the results of lacrimal probing in children at or older than 1 year of age with congenital nasolacrimal duct obstruction.
  
  
  METHODS
  Fifty eyes of 38 children (24 males, 14 females) with congenital epiphora who underwent nasolacrimal duct probing were evaluated in a prospective study. The age of the patients was between 12 and 101 months (mean: 33 months). Success of probing was defined as complete resolution of preoperative symptoms and signs. The mean follow-up was 8 months (3-28 months).
  
  
  RESULTS
  The success rate of probing was 88% (44/50 eyes). Residual epiphora was observed in 6 eyes of 4 patients (12%). Age of the patient, gender, the frequency of epiphora before probing and the unilaterality or bilaterality of epiphora did not correlate with the success of probing (p > 0.05).
  
  
  CONCLUSIONS
  Nasolacrimal duct probing is advocated as a primary treatment in children younger than 9 years of age before proceeding to more complex treatment options. Unsuccessful probing may result from the selection of nonmembranous obstructions rather than the increased age of the patients.
authors.affiliation: Department of Ophthalmology, Ankara University, Ankara, Turkey. gulerzilelioglu@hotmail.com
authors.forename: Güler
authors.initials: G
authors.lastname: Zilelioğlu
authors.forename: Banu M
authors.initials: BM
authors.lastname: Hoşal
mesh_terms: D002675:Child, Preschool; D003608:Dacryocystorhinostomy; D005260:Female; D006801:Humans; D007223:Infant; D007767:Lacrimal Duct Obstruction / Q000151:congenital*; D008297:Male; D009301:Nasolacrimal Duct / Q000002:abnormalities* / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D011446:Prospective Studies; D016896:Treatment Outcome