Artificial Naso-lacrimal Duct Used for chronic dacryocystitis,nasolacrimal duct obstruction,nasolacrimal duct stenosis ect. Artificial Naso-lacrimal Duct(Patent)1.Advantage:1 The operation is sample and safe.It has no hospitalization.2 Don't make the skin incision,less bleeding,less painful and no scar on the face.2.Indications:chronic dacryocystitisnasolacrimal duct obstructionnasolacrimal duct ...