1, the lungs for the gas Lord, gas and eyes Ming Zhang Jingyue said: “the lungs main gas, gas regulating the camping and guarding viscera and organs are not ruled” (“Class Classic Tibetan Elephant经 “注). As the lungs towards the hundred veins, the main body of the gas, lung gas and harmony, blood flow, the normal function of the organs, the five viscera and six bowels of the essence of the sun of the gas is sufficient, are able to source of infusion into the eye, so the eye is bright. If the lung gas is insufficient, so that the eye is not nourished, it is dark and unclear. This is the “Spiritual Pivot, decision gas” so-called: “gas out of the eye, the eye is not clear.” 2, the lungs main declination, eye smooth lung qi declination, can make the blood and fluid spread all over the body; lung qi purging, and can make the water and liquid down to the bladder. Lung declared normal, then the blood circulation fluent, the eye has the warmth and moistening of the guard gas and fluid, the guard has the right, and the turbid thing down, not to offend, the eye is not easy to disease. 3, the relationship between the eyes and the large intestine lungs and large intestine viscera and internal organs, each other. If the colon accumulation of heat, viscera gas, affecting the lung loss of purging, can lead to the eye due to gas, blood, fluid congestion and disease.