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Cicada slough (Chantui), snake slough (Shetui), human slough (Rentui, likely referring to hair or nails in this context), and phoenix slough (Fengtui, likely a substitute material) are each stir-fried with vinegar. Silkworm slough (Canhui, likely silkworm frass or cast skin) is baked until dry.

All the above materials are ground into fine powder, mixed equally, and then stir-fried with child's urine (Tongbian) and ginger juice (Jiangzhi). Store for later use. For each qian (approx. 3-5g) of the main "Da Bo Yun" medicine, add one fen (approx. 0.3-0.5g) of the slough powder.

Huo Pi formula (7 parts), Feng Pi formula (3 parts), Borneol (Bingpian, 2 parts), Cinnabar (Zhusha), Realgar (Xionghuang) (each 0.5 part), Amber (Hupo, 0.5 part), Borax (Pengsha, 0.5 part), and Hematite/Oyster Shell (Shijueming, 3 parts). Grind and mix these uniformly. Apply to the eyes to treat various conditions of dim vision with miraculous effect.

In treating eye diseases, internal cataracts (Neizhang) should be addressed first. Internal cataracts present with clear distinction between the white and black parts of the eye, but vision through the pupil is blurred. External obstructions (Waizhang) involve the presence of nebulae (Yi). When observing the nebula, if the patient can see the "Three Lights" (Sun, Moon, Stars/Lamps) when looking straight ahead, it is treatable; if the Ding nebula prevents seeing the Three Lights, it is untreatable; if there is a slippery nebula with thick membrane, after applying drops three or four times, if the color of the nebula changes, it is treatable; if copper spoons are used specifically to scrape off the nebula, do not expect rapid results.

When treating Fire Eye (Huoyan, acute inflammatory eye disease), apply only to the inner and outer canthi, never directly on the cornea/black eyeball (Zhu); however, when treating nebulae, application must be on the cornea. For Wind-induced ulcerative blepharitis (Feng Lan Xian Yan), apply only to the external eyelid; for heavy/thick nebulae (Zhong Yi), apply throughout the entire eye area. The eyes must remain closed for a long time after application, only opening once the medicinal effect has fully taken hold. If unable to open, keep closed for a long while longer, rinse away residue with clear water, and reapply immediately. Apply more than ten times daily. If the nebula appears to worsen or the eye swells, continue applying without fear, until the nebula dissolves completely. If the nebula is thin, use less medicine, applying only to the canthi, alternating between the sclera/white part and the cornea/black part. If there is pain, apply the Feng Pi internal cataract medicine several times to stop the pain, then proceed to apply nebula-treating drops. If the nebula is severe, use the "Zhong" (Loyal) series medicine; if mild, use the "Xin" (Trustworthy) series medicine. The preparation methods for all series are recorded in the preceding and following "San Qi" formulas. Dosage adjustments depend on the physician's flexible judgment. Generally, when the nebula is nearly resolved, add Qing Zhu (Clear Cornea) medicine to the heavy formula to prevent damage to the cornea; for floating cloud nebulae, using some Qing Zhu medicine to protect the cornea is also excellent. However, the Huo Pi formula contains woody components and should not be stored mixed for long periods; the Feng Huo Pi formula should not be mixed in large quantities either, as prolonged storage will slow its efficacy. Formulas processed by sublimation can be stored for a long time without issue, but should be dried regularly to prevent moisture. For internal cataracts or Fire Eye where excessive tearing prevents tolerance of the drops, apply while the head is tilted back. If there are millet grains (Feng Su Zi, granular hyperplasia inside the eyelid), do not pick with needles or wash with rush grass; instead, wash with winter mulberry leaf water and apply drops after turning the eyelid inside out. To treat Fire Eye, press the forehead with hand first; if cold, apply crushed green onion and ginger to induce cold sweat, which enhances the effect of the drops. Even eye diseases lasting ten years can be treated, provided the pupil remains intact. Treatment requires flexibility based on the patient's age and deficiency/excess patterns, combining internal medication with external drops. There is no case that cannot be cured. For applying drops to cause discharge ("Fa Yan"), use flat applicators for "Zhong" and "Xin" series, and round applicators for "Xiao" and "Di" series. Regarding internal and external nebulae and membranes, observe their color (green, blue, white, red-yellow, or dead/dull) and size, and determine prognosis by the ability to see the Three Lights. Inability to see the Three Lights indicates an untreatable condition; visibility of the Three Lights indicates treatability.