Conjunctivitis is a very common disease of the eye. During the treatment and recovery of the disease, it is generally recommended to pay attention to a light diet and try not to eat products such as seafood, which may aggravate the local symptoms. The causes of conjunctivitis are multiple and include infectious factors such as bacteria, viruses, and fungi. Non-infectious factors include immune factors, allergic reactions, etc. The treatment plan for conjunctivitis caused by different causes is different. If conjunctivitis develops in the eye, the first step is to go to the hospital for a detailed examination and choose a reasonable medication after the cause is clear. Infectious factors require anti-infective treatment, such as antibiotics, antivirals, antifungals, etc. Immune factors need to be treated with glucocorticoids, and allergic factors need to be treated with antihistamines. Only by choosing the right medication can the disease quickly return to normal.