Infectious conjunctivitis is often considered when the eyes are bloodshot and have itchy, itchy eyes with a lot of droppings. Bacterial conjunctivitis is considered when there is a lot of yellow droppings that stick to the eyelids, or when there is a lot of pus-like droppings that stick to the eyelashes in the morning or during the day, which affects the ability to see. The congestion is often heavy and is accompanied by mild eye itching. Antibacterial medication is required for treatment. If there are more white stools, more severe congestion, tearing and foreign body sensation, viral conjunctivitis is considered to be caused by a viral infection, mostly caused by a decrease in body resistance or immunity, and antiviral medications are needed for treatment. If the itchiness of the eyes is heavy, the white of the eyes are congested and there is not a lot of eye stool, there may also be allergic factors, and anti-allergic drugs are needed for treatment, mostly due to pollen, dust and other special exposure to substances caused by allergies.