Commentary states: Stye (Hordeolum) occurs when pathogenic heat combats with blood vessels, attacking upward to the eyes. It manifests on the eyelids as swollen and painful nodules, with redness at the base and a white head containing pus. The pain is like needle pricking. The treatment principle requires a detailed examination of external symptoms; appropriate scarification should be performed to drain pathogenic toxins. Subsequently, decoctions that reduce swelling and clear heat should be administered to eradicate the root cause.

For treating heat pathogens lodging in the eyes, forming swollen nodules, commonly known as "Stealing Needle" (Tou Zhen), use Banxia Tang (Pinellia Decoction).
Ingredients: Banxia (Pinelliae Rhizoma Praeparatum, washed seven times with water to remove slipperiness), Xixin (Asari Radix et Rhizoma, removing seedlings and leaves, 1 liang each), Qianhu (Peucedani Radix, removing rhizome heads), Zhike (Aurantii Fructus Immaturus, removing pulp and bran-fried, 2 liang each), Wumei Rou (Mume Fructus Carpus, 0.5 liang).
The above five herbs are coarsely crushed and sieved. Take 5 qianbi per dose, add 1.5 zhan of water, include ginger slice (size of a jujube, smashed), and decoct until reduced to 6/10. Strain and take warm after meals and before bedtime.

For treating heat pathogens lodging in the eyes causing internal swelling and protrusion, use Qianhu Tang (Peucedani Radix Decoction).
Ingredients: Qianhu (Peucedani Radix, removing rhizome heads, 2 liang), Shaoyao (Paeoniae Radix), Qingxiangzi (Qingxiangzi Semen), Juemingzi (Cassiae Semen, lightly fried), Xixin (Asari Radix et Rhizoma, removing seedlings and leaves), Cheqianzi (Plantaginis Semen), Zhizi Ren (Gardeniae Semen, 1 liang each).
The above seven herbs are cut into sizes similar to hemp seeds. Take 5 qianbi per dose, add 1.5 zhan of water and 7 bamboo leaves, decoct until reduced to 7/10. Strain, add 1 qianbi of Mangxiao (Natrii Sulfas) powder, boil once more, and take warm after meals and before bedtime. Mild diarrhea is considered the therapeutic effect.

For treating ulcers forming inside the eye, producing pus within three to five days, use Maimendong Tang (Ophiopogonis Decoction).
Ingredients: Maimendong (Ophiopogonis Radix, dehearted and baked),uanfuhua (Inulae Flos), Mutong (Akebiae Caulis, cut), Daqing (Isatidis Folium, 1.5 liang each), Fushen (Poria Cum Radix Pinelli, removing wood), Huanglian (Coptidis Rhizoma, removing roots, 1 liang each).
The above six herbs are coarsely crushed and sieved. Take 5 qianbi per dose, add 1.5 zhan of water, decoct until reduced to 7/10. Strain, add 0.5 he of Shengdihuang Juice (Rehmanniae Radix Fresh Juice) and 0.5 qianbi of Mangxiao (Natrii Sulfas) powder, boil two or three times, and take warm after meals and before bedtime.

For treating toxic heat attacking the eyes, causing eye swelling with pus, use Shaoyao Tang (Paeoniae Radix Rubra Decoction).
Ingredients: Chishaoyao (Paeoniae Radix Rubra, 1.5 liang), Lingyangjiao (Saigae Tataricae Cornu, shaved), Xuanshen (Scrophulariae Radix), Fangfeng (Saposhnikoviae Radix, removing forked parts), Huangqin (Scutellariae Radix, removing blackened centers, 1 liang each), Manjingzi (Viticis Fructus), Ganju (Chrysanthemi Flos).
The above seven herbs are coarsely crushed and sieved. Take 5 qianbi per dose, add 1.5 zhan of water, decoct until reduced to 7/10. Strain, add 1 qianbi of Mayaxiao (Natrii Sulfas Crystallinus), and take warm after meals and before bedtime.

For treating sudden hot pain in the eyes and swelling of the eyelid head, use Dahuang Tang (Rhei Radix et Rhizoma Decoction).
Ingredients: Dahuang (Rhei Radix et Rhizoma, cut and fried), Zhike (Aurantii Fructus Immaturus, removing pulp and bran-fried), Shaoyao (Paeoniae Radix, 3 liang each), Shanzhizi Ren (Gardeniae Semen, 2 liang each), Huangqin (Scutellariae Radix, removing blackened centers, 2 liang each).
The above five herbs are coarsely crushed and sieved. Take 5 qianbi per dose, add 1.5 zhan of water, decoct until reduced to 7/10. Strain and take warm after meals and before bedtime.

For treating sudden severe swelling and pain of styes preventing eye opening, use Shidan San (Chalcociti Pulvis) for eye instillation.
Ingredients: Shidan (Chalcanthitum, ground to powder, 1 fen), Huanglian (Coptidis Rhizoma, removing roots and pounded), Huangbai (Phellodendri Cortex, removing rough bark and pounded, 3 fen each), Ruiren (Pruni Armeniacae Semen, peeled and pounded), Tongqing (Calamina), Mangxiao (Natrii Sulfas, 0.5 liang each).
The above six herbs are powdered, then further ground in a mortar until extremely fine and uniform. Take an amount the size of millet grains to instill into the eyelid margins.

For treating toxic heat infiltration causing eye swelling, nodularity, redness, and pain, use Ruiren Jian (Pruni Armeniacae Semen Electuary) for eye instillation.
Ingredients: Ruiren (Pruni Armeniacae Semen, peeled and pounded), Qinpi (Fraxini Cortex), Huangbai (Phellodendri Cortex), Qingzhuru (Bambusae Caulis in Taenia, washed and cut, 1 liang each), Zhizi Ren (Gardeniae Semen, 0.5 liang).
The above five herbs are cut, crushed, and mixed evenly. Add 3 sheng of water, place in a copper vessel, and decoct to obtain 1 sheng. Filter through cotton cloth to obtain clear juice for eye instillation, 3 to 5 times daily.

For treating sudden formation of eye swellings, use Shidan San (Chalcociti Pulvis) for eye washing.
Ingredients: Shidan (Chalcanthitum, calcined until white to remove fire toxicity), Huashi (Talcum, ground, 1 liang each), Qinpi (Fraxini Cortex, 0.5 liang, powdered), Nifen (Calomelas, 2 qianbi).
The above four herbs are ground together uniformly. Use one zi amount, soak in warm water, close eyes, and wash both eyelid margins until cool.