Coin screen

Also silvery internal obstruction. An internal obstruction of the eye. A round white opacity blocking the pupil. It is usually attributed to insufficiency of the liver and kidney with yīn vacuity damp-heat or liver channel wind-heat attacking the upper body. It may affect either or both eyes.

Biomedical correspondence: cataract.

Medicinal therapy: Enrich the liver and kidney or nourish yīn, clear heat, and eliminate dampness.