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

• Drains Liver fire and anchors and sedates the Liver yang:  for Liver fire and ascendant Liver yang patterns with such symptoms as headaches, dizziness, and red eyes.  Commonly used for hypertension with ascendant Liver yang.*
• Improves the vision and causes superficial visual obstructions to recede:  for Liver heat patterns that affect the eyes causing photophobia, pterygium or other superfical visual obstructions, red eyes, and blurred vision.*
• Recently used for increased gastric acidity, and, topically, for bleeding due to trauma.*