Conjunctivitis is a common disease in ophthalmology and can be divided into many types depending on the cause. The choice of medication is different for different types, whether it is severe conjunctivitis or mild conjunctivitis, the correct medication must be chosen after a detailed examination, and only then the disease can be cured. In the case of bacterial conjunctivitis, the inflammation can be controlled by using antibiotic drops, such as levofloxacin hydrochloride eye drops and tobramycin eye drops. Viral conjunctivitis requires the use of antiviral medications, such as ribavirin eye drops and ganciclovir eye gel. Allergic conjunctivitis requires antihistamines such as sodium cromoglycate eye drops, azelaic acid eye drops, etc. Don’t buy drugs blindly after conjunctivitis occurs, not only will it not work as a treatment, but it may make the condition worse.