The members of Ojoplast adopt massage as the initial treatment for congenital nasolacrimal duct obstruction for patients <1 year of age. Probing is performed on patients >1 year of age, and early probing is used only for cases of dilated lacrimal sac. When massage and probing are not effective, intubation is performed, and if intubation is unsuccessful, dacryocystorhinostomy is performed, in which the external approach to dacryocystorhinostomy is used most often.