According to the basic theory of traditional Chinese medicine, the liver opens the orifices of the eyes, so eye diseases have a close relationship with the liver, and the dryness of the eyes is mostly considered to be a clinical manifestation caused by hyperactivity of the liver and yin deficiency of the liver and kidneys. So the main thing is to take oral medication to clear the liver, nourish the liver and kidney for treatment. If the dryness of the eyes is accompanied by dry mouth, bitter taste in the mouth, headache, dizziness, and number of strings in the pulse, it is considered to be hyperactive liver fire, and can be taken orally as gentian laxative pill, Huanglian Yang liver pill, etc. If the dryness of eyes is accompanied by lumbar and knee pain, dizziness and blurred vision, it is considered to be a deficiency of liver and kidney yin, and can be orally taken Liufei Di Huang Wan, Zhi Bai Di Huang Wan, Qi Ju Di Huang Wan, Dendrobium Nightshade Pill and so on.