If a three-year-old child is suspected of having conjunctivitis, it is important to distinguish between the types of conjunctivitis, which are divided into infectious and non-infectious conjunctivitis. Infectious conjunctivitis in children is mainly bacterial conjunctivitis, which is caused by bacterial infection, and can be treated with antibacterial medications, mainly tobramycin drops, which can be used about four times a day for antibacterial effects. Non-infectious conjunctivitis is more commonly known as allergic conjunctivitis, which is also common in children. Anti-allergic drops, such as olanzapine or emetine drops, can be used three times a day to prevent eye rubbing and blinking and itching.