When pathogenic heat-toxin enters the eyes, causing redness, pain, formation of corneal opacities (翳), and loss of vision such that light cannot be seen, Da Huang Zhi Zi Tang (Rhubarb and Gardenia Decoction) is indicated.
Raw Radix et Rhizoma Rhei (Da Huang, 大黄) (1 liang), Radix Cimicifugae (Sheng Ma, 升麻) (0.5 liang), Herba Dianthi (Qu Mai, 瞿麦), Radix Glycyrrhizae Preparata (Gan Cao, 甘草) (each 1 fen), Fructus Gardeniae (Zhi Zi, 栀子) (7 pieces).
Crumble the herbs, add two sheng of water, decoct to one sheng, remove the dregs, and take warm in four divided doses. The dosage should be adjusted until bowel movement occurs. If difficult to achieve bowel movement, after decoction, mix with two fen of Natrii Sulfas (Pu Xiao, 朴硝) and take together.
First decoct the other herbs to one and a half sheng, then add Da Huang. Soak Da Huang in water beforehand and add it along with the water; this method helps to reduce heat and facilitates easier bowel movement.
To treat toxic disease entering the eyes, suddenly causing red opacities, or white ones, or swollen eyelids protruding, or redness and pain preventing vision of light, with the pathogen affecting the Heart and Liver meridians. Or eyelid edema resembling exuded fluid,
with a membrane covering the pupil, or internal cataracts obscuring vision. This is largely due to imprudence after illness, consuming alcohol, wheat products, roasted foods, and the "Five Pungent Spices" (Wu Xin, 五辛). It is appropriate to take this formula frequently to induce purgation, using Qin Pi Da Huang Tang (Bark of Chinese Ash and Rhubarb Decoction).
Cortex Fraxini (Qin Pi, 秦皮), Radix Bupleuri (Chai Hu, 柴胡), Rhizoma Centipedrae (Chang Shan, 常山), Cortex Phellodendri Amurensis (Huang Qin, 黄芩), Radix Cimicifugae (Sheng Ma, 升麻), Radix Paeoniae Alba (Shao Yao, 芍药), Rhizoma Akebiae (Bai Lian, 白蔹), Fructus Aurantii Immaturus (Zhi Shi, 枳实), Radix Glycyrrhizae Preparata (Gan Cao, 甘草) (each 0.5 liang), Radix et Rhizoma Rhei (Da Huang, 大黄) (3 fen).