Corneal keratitis in adults is mostly due to more saliva secretion, which often moistens the oral area and stimulates local mucosa and skin; Vitamin B2 deficiency, toothlessness in the elderly, short vertical jaw distance, skin wrinkles in the mouth, etc. It is considered by Chinese medicine to be spleen and stomach weakness and uncontrolled diet. Treatment: the old man filled his teeth in time to restore the occlusal height. Pay attention to nutrition and eat more fruits and vegetables, especially foods rich in vitamin B2, such as animal liver, eggs, dairy products, wheat germ, yeast and green leafy vegetables. In severe cases, take vitamin B2 orally, 5mg once, three times a day, or take Wei Qing Powder, Sijunzi Decoction or Ziyin Jianpi Pill, and externally apply coptis paste and musk powder. , can achieve good results.

Furthermore, oral ulcers are mostly caused by decreased immunity, psychological stress, endocrine disorders, lack of trace elements and vitamins, poor oral hygiene, poor prostheses or sharp teeth.