Herbs that Tonify Yin

Which herb tonifies the Kidney and brightens the eyes? For diminished visual acuity due to Kidney and Liver deficiency.

Shi Hu can be combined with herbs like Gou Qi Zi for poor night vision.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 831. [Q1139]