Hedge Prinsepia Nut Classic Formulas … Natural Herb Library

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Nourishes the Liver and brightens the eyes - Rui Ren is a classical eye herb for red, painful, blurred, tearful, or photosensitive eyes when dryness, heat, or insufficient nourishment are involved.
Dispels wind-heat from the eyes - traditional external and internal use includes acute red-eye and irritated-lid patterns rather than only deep deficiency states.
Calms the spirit - older sources also remember Rui Ren as a mild settling medicine for poor sleep or restlessness.
Often processed for ophthalmic use - the seed is classically de-oiled, powdered, or made into ointment-like preparations for topical eye applications.

Chun Xue Gao - classical Rui Ren eye preparation for dim vision, wind irritation, and chronic tearing.
Rui Ren ointment and wash traditions - seed-based topical preparations for red eyes, canthus irritation, and lid inflammation.
Rui Ren with cooling eye herbs such as Hu Huang Lian or bamboo leaf - older strategy for hot, painful, or inflamed eyes.

The official modern Chinese reference platform describes Rui Ren as sweet and slightly cold, entering the Heart and Liver, with actions of dispelling wind-heat, nourishing the Liver, brightening the eyes, and calming the spirit.
Classical citations focus overwhelmingly on ophthalmic use, which helps distinguish this record from other oily or moistening seeds in the materia medica.