In the vast majority of cases, the function of the tear ducts can be restored immediately after lacrimal duct exploration, and the symptoms of lacrimation and pus can disappear, but in some cases of neonatal lacrimal ducts, although the ducts are explored, he may still have lacrimation for a period of time just after surgery because the inflammation has not completely subsided, but it is generally less severe than before surgery. This time it is recommended to routinely apply antibiotic eye drops after surgery and add antibiotic eye ointment at night, so that the inflammation can subside in time. There are also individual newborns with lacrimal sac infection after lacrimal surgery, because the inflammation did not subside in time, there may be tear ducts blocked again, and may also flow tears and pus, most of the tear ducts can be reconstructed after the lacrimal exploration surgery.