Ophthalmologists believe that if conservative treatment is ineffective; cases where lacrimal duct exploration is ineffective and older children should opt for lacrimal intubation surgery as soon as possible, because long-term lacrimal duct obstruction and inflammatory stimulation can produce the following serious complications in children: 1. developmental malformation of the child’s bony lacrimal duct; 2. repeated inflammatory stimulation can cause inflammatory adhesions of the lacrimal duct, lacrimal dots, and nasolacrimal duct; 3. repeated inflammation can cause The child’s lacrimal system fibrosis; 4, the child’s lacrimal duct development malformation; 5, repeated inflammatory stimulation will cause the child’s acute lacrimal sac, chronic conjunctivitis, keratitis, eyelid skin eczema, and even orbital cellulitis, and even the formation of severe lacrimal sac fistula; 6, repeated inflammatory stimulation and repeated lacrimal duct probing, will make the next lacrimal duct intubation surgery failure; 7, long-term lacrimal sac inflammation, resulting in the child’s lacrimal sac dilatation, and Even after the nasal tear sac anastomosis surgery when the child is older, the tear duct siphoning effect disappears due to the loss of elasticity of the dilated tear sac, and the child will still be left with symptoms of tearing even after the surgery.