Ren girl in a company doing financial work, her daily work is to the computer, at the end of the month is to work in front of the computer for nearly ten hours, usually feel dry eyes discomfort, myopic eye surgery, eye discomfort more intense, and even foreign body sensation, but also often “red eyes”, stinging and even can not open their eyes, the surgeon The surgeon told her to insist on artificial tears, and after 3 months, she still couldn’t get rid of the drops. In my clinic, after a series of tests, it was found that her basic tear volume and tear film stability were lower than normal, and she was diagnosed with “post-LASIK dry eye”. LASIK is currently the mainstream myopia surgery and has been shown to be safe and effective over the years since its introduction. The procedure involves the creation of a corneal flap and the precise cutting of the corneal stroma with a laser to change the curvature of the cornea by changing the curvature of the cornea to correct myopia. The creation of a corneal flap can damage some of the nerves in the cornea, affecting normal tear secretion, thus causing or aggravating dry eye and the eye discomfort felt by Little Miss Ren. It usually takes more than six months to repair the damaged nerves. During this time, those who have undergone myopia surgery can only use artificial tears to replace the lack of normal tear secretion. However, most of those who underwent myopia surgery used to wear contact lenses, work long hours with computers, live in an air-conditioned environment, often engage in concentration work such as driving, or have improperly used so-called “anti-fatigue” eye drops, and have long been “dry eye”. “Myopia surgery has aggravated the performance of dry eyes, and artificial tears alone cannot relieve eye discomfort. Analysis of the condition of the girl Ren, the author gave before and after she used several different artificial tears, but her dry eye symptoms relief is not obvious, and the need to use artificial tears as many as 10 times a day. Scientific studies have shown that when the amount of artificial tears exceeds 5 to 6 times a day, it affects the efficacy of the artificial tears. After careful consideration, we implanted tear duct plugs in both eyes, which can be kept for six months. Ms. Ren felt that her dry eyes were significantly relieved, the foreign body sensation disappeared, the frequency of artificial tears was significantly reduced, and the volume of tears and the stability of the tear film were improved on review. So what is a tear duct plug? Our normal human tears flow through the surface of the eye and enter the nasal cavity and throat through the upper and lower lacrimal ducts of the eye, and the lacrimal duct plugs are made of special materials that block the lacrimal dots and ducts. Blocking the lacrimal duct is like plugging the “sewer” where tears flow out of the eye, which can maximize the preservation of natural tears in the eye. There are two main types of tear duct plugs: one is an absorbable type made of collagen or polymer that lasts for various periods of time (3 days to 6 months). The other is a non-absorbable “permanent” pessary with a hydrophilic acrylic component. The number and type of plugs implanted in the upper and lower lacrimal ducts of both eyes is usually chosen according to the patient’s needs. According to the author’s clinical observations over the years, the use of tear duct plugs not only significantly improves dry eye symptoms, but also improves the corresponding objective examination index, and is often used in patients with moderate to severe dry eye disease. Since tear duct plug implantation is convenient, fast, painless, and without special discomfort after implantation, and can reduce the use of or even eliminate the need for artificial tears, the application of tear duct plug implantation is more widespread. Patients with dry eye disease who are not satisfied with the use of artificial tears, or who cannot adhere to the standard use of artificial tears, can consider tear duct suppository treatment.