Kidney deficiency may lead to discomfort such as dry eyes and blurred vision. Kidney is the master of water and has the function of regulating water and fluid in the body. When kidney is deficient, the area around the eyes loses its moisturizing effect, which may lead to dark circles and sunken eyes, as well as symptoms such as dryness of the eyes. Liver and kidney have the same origin, kidney deficiency may also lead to liver deficiency. Liver is the main eye, liver deficiency can’t moisturize and nourish the eyes, which may lead to blurred vision, tears in the wind and other symptoms. In addition to the eyes, kidney deficiency may also lead to lumbar and knee weakness (a feeling of weakness and tenderness in the waist and knees), dysuria (unsmooth urination), edema and other conditions. Kidney deficiency can be categorized into Yang deficiency, Yin deficiency and Qi deficiency. If patients have related symptoms, they should go to the hospital in time, and after clarifying the type of the disease, they should be treated under the guidance of the doctor.