Eye allergy is an allergic reaction caused by foreign substances, which is a tissue damage or dysfunctional reaction that occurs when the body that has already developed immunity is exposed to allergens again. The main premise of treatment is to identify the allergens as early as possible. At present, the main common allergens are inhaled substances such as pollen and mites, etc., ingested substances such as milk and seafood, etc., contacted substances such as cold air and cosmetics, etc., and injected substances such as penicillin and cephalosporin antibiotics. For this kind of disease, prevention is still the main focus, so it is recommended that under the premise of clear allergens, you need to take the initiative to avoid contact with allergens, usually avoid eating this kind of food, go out and wear a mask to avoid injecting this kind of material, and at the same time pay attention to exercise to strengthen the resistance. Because of the variety of allergic substances, as well as different organisms, so according to different situations, make different treatment programs, so it is necessary to know whether there are allergies, there is no previous use of such drugs, there are no other underlying diseases, in view of the complexity of the condition, as well as the timing and type of drug treatment is different, do not recommend that the patient buy their own medicine outside the treatment. In summary, although the treatment of allergy is relatively common, but the specific situation of the patient is different, so you should go to the hospital ophthalmology examination, according to the patient’s different conditions, to develop a personalized program, in order to receive a better therapeutic effect.