The increase in discharge from the baby’s overflowing eyes may be caused by blockage of the nasolacrimal duct. This situation has nothing to do with whether or not “fire”. If your baby has a lot of discharge from the eyes, you should take your baby to an ophthalmologist for treatment with antibiotic eye drops and tear duct massage. If the symptoms are not relieved or the condition is recurrent, further lacrimal duct exploration is often required. 1.What is nasolacrimal duct obstruction? Tears are secreted by the lacrimal gland and then the tears moisten the eye, and then enter through the tear dots at the inner canthus of the upper and lower eyelids, and then enter the nasal cavity through the tear duct. When a baby has a blockage of the tear duct, the tears cannot flow into the nasal cavity, causing tear overflow. The flow of tears to the eyelashes, eyelids and cheeks can cause eyelid redness (sometimes the upper and lower lids stick together). The normal flora of the eyelids cannot flow into the nasal cavity through the blocked nasolacrimal ducts, and bacteria accumulate in the eyes, which can cause yellow eye stools. In severe cases, this can cause a tear duct infection (dacryocystitis). More than 5% of babies have symptoms of nasolacrimal duct obstruction in one or both eyes. Thankfully, more than 90% of babies clear up on their own within 1 year after birth. 2.What are the causes of nasolacrimal duct obstruction? The most common cause of nasolacrimal duct obstruction in babies is that the Hasner valve at the lower end of the nasolacrimal duct does not open properly at birth. Other causes include: narrowing of the lacrimal duct; absence of tear dots in the upper or lower lid; infection, etc. 3.How should nasolacrimal duct obstruction be diagnosed? Overflowing tears and abnormal discharge around the eyes that appear within a few days or weeks after birth strongly suggest a lacrimal duct obstruction. You need to take your baby to an ophthalmologist for a consultation. A visit to a pediatric ophthalmologist is important for the exclusion of other rare but serious causes, such as infantile glaucoma. 4.How to treat nasolacrimal duct obstruction? Most nasolacrimal duct obstructions resolve on their own. If symptoms persist, a variety of treatment options are available, including lacrimal massage, antibiotic drops, lacrimal duct probing, and lacrimal intubation surgery. 5.When to use antibiotic eye drops? When yellow discharge is present in the eye, antibiotic eye drops or eye ointment can be used for treatment. However, the medication does not open the tear duct and the symptoms can recur after stopping the medication. 6.What kind of surgery is lacrimal passage? Tear duct exploration is a minimally invasive surgery in ophthalmology, in which the baby’s tear duct is flushed first, and then it is clear whether the tear duct is open or not. If it is determined that the tear duct is not open, a smooth probe (similar to a thin metal wire) will be used to gently pass through the tear duct into the nasal cavity and probe the blocked area, then the baby’s tear duct will be open. 7.What conditions require lacrimal intubation? For babies with congenital lacrimal duct malformation and lacrimal duct stenosis, lacrimal intubation is often required. The advantage of this method is that repeated lacrimal probing can be avoided and the baby’s lacrimal duct can develop normally.