Sea-Ear Shell Classic Formulas … Natural Herb Library

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Subdues Liver Yang and anchors rising activity ... Shi Jue Ming is a classic heavy shell medicine for headache, dizziness, irritability, and hypertension-pattern symptoms when Liver Yang rises upward.
Clears Liver heat and benefits the eyes ... red, painful, swollen eyes and blurred vision are among its best-known indications.
Supports chronic eye weakness when combined with Yin- or Blood-nourishing herbs ... especially when the eyes are not only inflamed but also undernourished.

Jue Ming Wan and related eye-support formulas ... Shi Jue Ming is paired with Blood- and Yin-nourishing herbs for chronic visual decline.
Liver-Yang-rising formula modifications with Gou Teng, Ju Hua, and Xia Ku Cao ... a common modern-classical pattern for headache, dizziness, and red eyes.
Topical calcined-powder applications in older ophthalmic practice ... especially for stubborn external eye complaints.

Traditional commentary repeatedly says Shi Jue Ming is one of the key shell medicinals for settling the Liver and brightening the eyes.
Its salty cold nature is said to enter the blood level of the Liver and thereby clear heat that rises into the eyes.
The shell's heaviness explains why it is chosen for upward Yang excess rather than for simple mild eye strain alone.