Miss Wang is an ordinary employee, usually only doing some company reception work, work is relatively leisurely, and rarely watch TV and computer after going home. However, in the past six months, she has been experiencing dryness and soreness in both eyes, which gradually worsened and seriously affected her daily work and life. He was diagnosed as having dry eyes after visiting several hospitals, and his symptoms did not improve significantly even after he was given artificial tear drops. At a recent visit, the doctor asked Ms. Wang about her history of epilepsy and had been taking anti-epileptic drugs (carbamazepine, lamotrigine, sodium valproate) for more than 1 year. After consultation with the neurologist in charge of treating epilepsy and changing the medication and dosage, the dry eye symptoms gradually improved and she resumed her normal work and life. Dry eye is a disease with a high incidence in ophthalmology clinics. The main symptoms are dryness, soreness, foreign body sensation, burning sensation, etc. Some people may have dry mouth, dry nose, and dry stools. There are many causes of dry eyes, such as environment, diet, trauma, surgery, medication, personal habits, immune abnormalities, and changes in hormone levels of the body. In recent years, it is also seen in patients after excimer myopia surgery and in young people who often work and study in front of video terminals (computers, TVs, cell phones, etc.). One cause that is easily overlooked by doctors and patients is the long-term use and abuse of certain drugs. According to statistics, most of the medically induced diseases caused during the clinical consultation and treatment of patients are of pharmacogenic origin. It is not uncommon to find drugs that cause pharmacogenic eye disease, many of which are commonly used, but during the daily treatment of dry eye, few ophthalmologists ask patients about their use of medications, ignoring the dry eye symptoms caused by adverse reactions to certain medications, making it difficult to develop a more effective treatment plan. glaucoma drugs (timolol, brimonidine, dorzolamide, etc.) and various ophthalmic additives (nipagin ethyl, thimerosal, benzalkonium bromide, benzalkonium chloride), etc. Ms. Wang takes the antiepileptic drug carbamazepine belongs to the tricyclic anticonvulsants, which have anticholinergic receptor effects. The main mechanism of pathogenesis is that the drug affects the parasympathetic or sympathetic nervous system, the pathway governing the secretion of the lacrimal or paracrine glands is blocked; or the topical use of the drug causes tear film instability and eye surface abnormalities. The main treatment for this kind of dry eye is to stop or change the medication, and those who cannot stop using it can consider reducing the dosage appropriately, in addition to taking into account the causal treatment and symptomatic treatment, such as giving artificial tears, benefiting qi, nourishing yin and generating fluids, and improving local or systemic symptoms.