Red eye, also known clinically as acute infectious conjunctivitis, is an acute disease caused primarily by bacterial or viral infection. The disease is contagious and spreads mainly by contact, and the population is generally susceptible. It is important to understand the clinical manifestations and treatment of pink eye in order to maintain eye health. The typical clinical manifestation of pink eye is redness of the eyes, a symptom that is seen in almost all patients with pink eye, according to the name of the disease. Some patients also experience redness and swelling of the eyelids, increased tearing, itching of the eyes, increased fluid production, and crusting of the eyelids. A very small number of patients with pink eye may experience mild photophobia, and it is important to seek prompt medical attention at this time. The main clinical approach is to use medications to help control the symptoms of pink eye. For red eyes caused by bacterial infections, levofloxacin eye drops can be used to help control the condition. Levofloxacin eye drops have a broad-spectrum antibacterial effect and can help inhibit the growth and reproduction of pathogenic bacteria in the body, effectively relieving the symptoms of pink eye. For red eyes caused by allergies, aggressive removal of allergens and the use of anti-allergy medications can be used to treat the disease. During the red-eye season, it is important to take better care of the eyes and avoid going to crowded places to avoid being infected with red-eye. Once the symptoms of pink eye appear, active medication can help maintain eye health.