Increased ocular discharge that appears suddenly in the eye is considered bacterial infectious conjunctival or keratitis. Under normal circumstances, bacteria are present in the conjunctival sac, and infection does not occur due to the body’s defense mechanism. In the presence of abnormalities in the defense system, pathogenic bacteria can trigger infection, such as the presence of low resistance in patients with dry eyes, diabetes, colds, etc. The presence of obvious redness of the eyes and increased purulent discharge is considered acute bacterial conjunctivitis, accompanied by loss of vision, which may invade the cornea and cause bacterial keratitis. Bacterial conjunctivitis has the possibility of self-healing and can recover in about 1-2 weeks. It is still recommended to use antibiotic drugs appropriately to shorten the course of the disease and quickly relieve the discomfort, which can prevent complications, and the recovery is better and less prone to recurrence.