This is a thorny problem that often plagues outpatients in ophthalmology clinics and is a problem for many physicians. Epidemiological surveys show that ocular surface diseases are developing rapidly in China. With severe air pollution, industrial development, wearing of corneal contact lenses, increased air-conditioned environment, use of fluorescent screens, etc., ocular surface diseases such as dry eye, keratitis and allergic conjunctivitis are on a gradual rise. Dry eye is the most common one. Tears produced by the eye have a protective effect and their main functions are: ① to cover and fill the corneal surface, making the cornea a smooth optical interface; ② to moisten and protect the cornea and conjunctival epithelium; ③ to inhibit the growth of microorganisms by blinking mechanical flushing and anti-microbial action; ④ to provide the necessary nutrients for the cornea. Dry eyes are caused by abnormalities in any of the components of the tear film, insufficient tear production or its distribution or maintenance. The main clinical manifestations of dry eye are: ① ocular grinding, foreign body syndrome, spontaneous dryness, and burning; ② mucous filiform discharge, filiform keratitis, conjunctival congestion, and papillary hyperplasia in the eye; ③ severe dry eye can be complicated by blepharitis, corneal degeneration, and corneal ulceration. At present, clinical dry eye is not common except for those caused by eye diseases, but the common one is the “pharmacogenic dry eye” caused by the abuse of eye drugs. So, who is the culprit? 1, the current market can buy eye medicine is basically 2-15 ml bottle, need to use 15-30 days, because eye medicine requires aseptic preservation, eye medicine are added preservatives, and preservatives may damage the eye surface environment, causing dry eye. In fact, the real “trachoma” has been rarely developed due to the improvement of hygiene and living habits in China, and most of the misdiagnosed cases are: ① In children, it is “follicular conjunctivitis”, which is characterized by itchy, small clear follicles on the lower eyelids. In adults, it is mostly “chronic conjunctivitis”, where the conjunctiva of the lower eyelid is villiarily congested. In adults, the condition is more likely to be “chronic conjunctivitis” with choroidal congestion of the conjunctiva in the lower eyelid. ③ However, if you order antibiotic eye drops containing preservatives (the main type of eye medication) for a long time, it will destroy the conjunctival cupped cells and corneal epithelial cells. And let patients continue to order eye drugs, thus causing “pharmacogenic dry eye”, from then on, constantly aggravate this vicious circle! Caught in the circle of “how to order eye medication, the more serious eye disease”! Because dry eye is a chronic disease, the patient suffers mentally. Others see nothing, but the subjective feeling is extremely painful. 1.First, stop the medication. 2, check where the problem is. 3, change the habit, insist on gently closing the eyes for 1 second when discomfort – count 2 times slowly, 1 ……, 2 ……. 4.No more forceful squeezing of the eyes and control of rapid blinking. 5.Fixed time, multiple follow-ups, systematic treatment for 2-4 weeks to improve and regulate the eye surface microenvironment. 6.Finally, use Chinese herbal medicine and whole body conditioning to achieve healing.