Excerpted from Bensky:  Chinese Herbal Medicine Materia Medica, 3rd ed.

• Clears the Liver and the eyes:  for red, swollen, and painful eyes from heat or wind-heat in the Liver channel.  Also for eye problems such as photosensitivity, night blindness, and insidious loss of vision without visible physical changes to the eye.*
• Calms the Liver and anchors the errant yang:  for headaches and dizziness from ascendant Liver yang.  Recently this function has been expanded to include hypertension.*
• Moistens the Intestines and unblocks the bowels:  for dry or infrequent stools or chronic constipation, especially when there is an aspect of Liver yin deficiency.*
• Recently used to prevent atherosclerosis as it lowers both blood pressure and serum cholesterol.*