In clinical practice, many acute ophthalmologic diseases are often treated with the lower method with satisfactory results. There are many cases of external ophthalmopathy that belong to real fire and heat toxins, but the clinical evidence should first identify whether the lower method is applicable. If the patient also has symptoms of irritability, constipation, or no constipation and the eye belongs to the heat and poison, as long as the patient’s body is strong, can be used under the method of straight fold its potential. When the patient has been released many times, the eye redness and pain, photophobia and shyness and other symptoms can often be immediately reduced, and receive immediate results. It is a very fast and effective method to reduce fever, so it is called the “bottom of the pot” method. Although the eyes live in the head, but its connection through the meridians, and the five internal organs have a very close relationship. For example, the meridian of the stomach starts under the eyes, enters the teeth, rings the lips, follows the throat, the lower diaphragm, and belongs to the stomach. The accumulated heat in the stomach and intestines can directly disturb the eye orifices through its meridians. If the heat of the stomach and intestines is removed, the heat of the upper inflammation can be directly reduced, so that acute symptoms of eye diseases, such as red eyes, swollen cells, gnarled veins, hot tears like soup, cataracts covering the eyes, headaches like splitting, or even pus filled eyes, can be quickly controlled. Ophthalmic diseases, especially external eye diseases, are often caused by real fire and heat toxins. Zhang Zihe, a famous doctor of the Jin Dynasty, said, “The eye is not sick if it is not due to fire.” Although this statement is not too one-sided, but illustrates the eye disease is a real heat evil poison for many people. The “bottom of the kettle” belongs to the cold method, which is a cold and laxative drug to pass the stool, thus diarrhea out of the body of real heat treatment. This method can not only remove the dry stool in the intestine, but also cleanse the actual evil heat poison from the stool, so it is one of the important methods for the treatment of external eye disease. Commonly used drugs Mostly choose heat-clearing and fire-removing drugs and heat-clearing and detoxifying drugs, such as gypsum, Zhi Mu, smallpox powder, bamboo leaf, Xia Ku Cao, Yin Hua, Chrysanthemum, Meng Hua, etc.; appropriately add blood-activating drugs and qi-regulating products, such as angelica, safflower, red peony, etc.; for severe cases of real heat, choose laxative drugs such as rhubarb, mannite, etc. Commonly used formulas 1, diarrhea of fire and detoxification formula: 12g of raw brocade, 6g of raw hedgehog, 9g of xuanming powder. This formula can be used for corneal ulcers, keratitis, sclerenitis, acute conjunctivitis, acute dacryocystitis, wheals, etc., where heat and toxicity are deep. 2.Pus Infusion in Eye Formula: 12g of raw jinlin (after decoction), 6g of Citrus aurantium shell, 9g of Xuanming powder, 9g of Guahuajin, 10g of Yinhua, 6g of Scutellaria baicalensis, 12g of raw gypsum (after decoction), 6g of Xiaquan grass, 6g of smallpox powder, 6g of light bamboo leaf and 3g of licorice. This formula is used for corneal ulcer with pus accumulation in the anterior chamber, with dry stool and short red urine. It has the function of clearing heat and detoxifying toxins, dipping fire and breaking stasis, nourishing yin and generating fluid. 3, broken red silk red tendon formula: 12g of raw jinlin, 9g of xuanming powder, 6g of licorice, 9g of raw hedgehog shells, 9g of gweiwei tail, 6g of red peony, 6g of chrysanthemum, 6g of meng hua, 3g of safflower. In this formula, raw jinlin, xuanming powder, hedgehog shells, that is, diarrhea and detoxification formula, the function of diarrhea and detoxification; add blood circulation and dispel stasis medicine gwei tail, safflower, red peony, etc., to help move stagnation and eliminate stagnation; chrysanthemum, meng hua can clear the liver, brighten the eyes and remove opacities. The whole formula can be used for corneal ulcers with pus accumulation in the anterior chamber and mixed congestion of the bulbar conjunctiva due to inflammation that does not subside for a long time.