Aureomycin eye ointment is an antibacterial agent for the eye, the main active ingredient of which is aureomycin. Chlortetracycline is a broad-spectrum antibiotic of the tetracycline class, whose main mechanism of action is to inhibit bacterial protein synthesis. It has a certain inhibitory effect on Gram-positive bacteria commonly found in the eye as well as Chlamydia trachomatis. It is used clinically for bacterial conjunctivitis, mydriasis, and bacterial blepharitis, as well as for the treatment of trachoma. This drug is for ocular use only. Hands should be cleaned before use, and the mouth of the tube should not touch the hands or eyes to prevent damage and contamination. However, this drug should not be used continuously for a long period of time, and should be discontinued for five days if symptoms are not relieved. In short, aureomycin ophthalmic ointment is mainly an antibacterial drug for the eye, which has antibacterial effects and is used for infectious diseases of the eye.