Among babies with eye diseases, there are few with tearing symptoms, which really worries many young parents. Here we will talk about several common eye diseases that cause tearing in babies. First, congenital tear duct obstruction (neonatal dacryocystitis) Eye clinic has many babies within one year of age or even newborns who are not yet full term, and soon after birth they begin to tear, yellow water, and always have a lot of eye stool stuck to the corner of their eyes. This is usually a typical sign of congenital tear duct obstruction or neonatal dacryocystitis. This disease is caused by the obstruction of the tear ducts due to the absence of rupture of the membrane tissue in the tear ducts after birth, or the presence of congenital developmental malformations in the tear duct system. Due to the obstruction of tear drainage, lacrimation and fluid in the eyes occur, and if combined with infection, it can lead to lacrimal sac abscess, or even the abscess can break down and form a lacrimal sac fistula. This disease requires an early visit to the ophthalmology clinic to flush the tear ducts, both to confirm the diagnosis and to help cleanse the child of purulent secretions in the tear ducts. Babies under five months of age can be treated by massaging the lacrimal sac and ordering medication, but if conservative treatment does not work for older children, lacrimal duct unblocking and intubation surgery should be considered. Some children are born without tears and gradually start to have teary eyes and wet eyelashes after one or two years of age. Most of these children’s symptoms are caused by lower lid entropion. Due to the low nasal bridge and underdeveloped lower eyelids, some children’s lower eyelids may turn inward, causing the lower eyelashes to sweep against the black eyeball and irritate the tearing, or in severe cases, damage to the black eyeball (cornea), resulting in red eyes and fear of light and tears. Most of these babies will gradually improve as the nose and eyes develop and the lower eyelids gradually turn out. Parents can help their child pull and tug on the lower eyelid with tape every day under the guidance of a doctor to prevent excessive sweeping of the inverted eyelashes over the black eyeball causing keratitis. If the keratitis is not improving, the child should seek medical treatment as soon as possible. Allergic conjunctivitis There are also some children who have mainly tears in the wind, but tears indoors are not obvious, and some have the habit of blinking and rubbing their eyes, especially after a cold and in the sandy, dry season (such as winter and spring). Careful questioning of the parents will reveal that the child often has a history of allergic rhinitis, allergic asthma, skin rashes, etc., or that the child has allergies caused by keeping small stuffed animals at home. Most of these children suffer from allergic conjunctivitis as well as dry eyes, and need to be examined and treated with medication in a timely manner. Fourth, congenital glaucoma Finally, there is a particularly easy to ignore, but quite serious disease, is congenital glaucoma. Usually we meet some children who are particularly “cute”: big black eyes and look watery (with tears in them). This may be a sign of congenital glaucoma, commonly known as “watery eyes”. Congenital glaucoma is a congenital, genetically predisposed disease, the main manifestation of photophobia and tearing, the black eye enlarges edema, eye pressure increases, and in serious cases, eventually the optic nerve atrophy of the fundus of the eye leads to blindness. According to the survey, the blindness rate of congenital glaucoma in China is in the sixth place among various congenital eye diseases. At present, congenital glaucoma can be treated surgically, but early detection, early diagnosis and early treatment are very crucial to save the child’s vision, otherwise it is found too late, even if the surgery is successful, the optic nerve atrophy in the fundus will not be able to return to heaven.