The Liver stores blood which is the organ responsible for Qi and blood as well as the smooth flow of emotions. According to The Five Element theory in TCM, the Liver is the “mother” of the Heart. Continual stress or depressed emotion will cause Liver energy becoming compromised (Live Qi deficiency) since one of its energetic functions is to smooth and regulate emotions.
The eyes are the sensory organ related to the Liver. It may be a sign that the liver is not functioning well if you have blurry vision, red or dry eyes, itchy or sore eyes.
The opposite of Liver Qi deficiency is the Liver Qi stagnation, which causes anger. If you are often irritable, get angry easily, have sense of tightness on chest, or sore underneath the chest, you may have Liver Qi stagnation and need to sooth the liver.