How to handle blocked nasolacrimal duct in newborns

Patient's question:

No

Doctor's answer:

Nasolacrimal duct obstruction in newborns is caused by the incomplete development of the lower end of the nasolacrimal duct in newborns during the initial period after birth. It may be blocked by a congenital remnant membrane or obstructed by residual epithelial cell debris, leading to nasolacrimal duct obstruction.