Dry eye refers to the loss of tears, very dry, white eyes, black eyes dry lost lustre rotating failure, even black eyes cloudy, consciously dry unwell disease, is one of the external disability ophthalmopathy. Chinese medicine will belong to " dry astringent eye "," dry and yellowish disease ","God water will blight" and other categories. The book "Shen Shi Yao Han" wrote by Ming,Fu Renyu has a detailed descripti...