Gou Jing Cao, also known as Pearl Grass, Meteor Grass, Gou Jing Zhu, Shifting Star Grass, Drumstick Grass, etc., has the efficacy of evacuating wind-heat and brightening the eyes to reduce cataracts (to improve vision and blurring of vision). Gu Jing Cao is the dried heads with flowering stems of Gu Jing Cao, a plant in the family of Gu Jing Cao, which belongs to evacuating wind-heat medicine in antidepressants. It enters the liver meridian and lung meridian. It is pungent, sweet and flat in nature. It has the effect of dispersing wind-heat, brightening the eyes and eliminating cataracts, and is often used in the treatment of swollen pain and shyness, wind-heat and eye redness, cataracts in the eyes, wind-heat and headache, and so on. The adverse effects of Gou Jing Cao are not clear. People with blood deficiency and eye diseases should be cautious of using Gou Jing Cao. Note that decoction of Gu Jing Cao with iron utensils is prohibited. If necessary, use this medicine under the guidance of a professional Chinese medicine practitioner.