[Ballon dacryocystoplasty (DCP) for treatment of pediatric patients with congenital nasolacrimal duct obstruction after failed primary probing].

Purpose: To determine the efficiency of lacrimal balloon catheter dilatation to treat congenital nasolacrimal duct obstruction in children who had failed two lacrimal system probings.

Methods: Between October 2004 and June 2006 we performed a prospective study of balloon catheter dilatation for congenital nasolacrimal duct obstruction in 30 lacrimal systems. The mean age was 32.