Red eyes refer to conjunctival congestion, commonly known as fire eyes, mostly due to wind and fire, liver fire or yin deficiency fire. In cases of liver heat attack, the white eyes are mostly red and red, or the wheel is very red; in cases of liver and lung yin deficiency, the white eyes are light red and the vision is dim. It is advisable to combine the ocular and systemic conditions in the diagnosis and treatment. There are three types of eye redness. One is wind-assisted fire depression on the top. The second is fire. Third, dryness injures the liver. Eye redness is commonly seen in Western medicine in acute conjunctivitis, pseudoconjunctivitis and epidemic keratitis, etc. It is thought to be caused by bacterial or viral infections, or allergies. It is caused by liver fire, spleen deficiency, water-dampness can not be well transported, poor sleep and excessive spicy diet. Swelling and pain of eye is an acute symptom of a variety of eye disorders. According to the ancient literature, it is also called “wind-heated eye”, “stormy wind and guest fever”, and “red eye of the sky” according to the cause, urgency and prevalence of symptoms. Redness and swelling of the eyes are commonly associated with acute conjunctivitis, pseudoconjunctivitis and epidemic keratitis in Western medicine, and are thought to be caused by bacterial or viral infections or allergies.