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To treat sudden onset of redness, swelling, and pain in the eyes, suitable for individuals with robust constitutions in northern regions.

Chen Mahuang (Ephedrae Herba processed), Jingjie Sui (Schizonepetae Spica), Bai Jiegeng (Platycodonis Radix), Niubangzi (Arctii Fructus), Zhuang Dahuang (Rhei Radix et Rhizoma) are each cut into slices weighing 1.3 qian to form one dose. Ginger (Shengjiang) 5 qian and scallion heads (Congtou) 2 liang are used as guides. After taking the medicine, if the swelling subsides and redness recedes, continue with 3-4 doses of Jinye Tang (Golden Fluid Decoction) for consolidation, and apply Yuhua Dan (Jade Flower Powder) externally to the eyes.

To treat external obstructions of the eye (Wai Zhang), characterized by redness, swelling, photophobia, blurred vision, and membranous opacities.

Ludongshi (Calamina) 2 liang: select white, light pieces resembling cloud sheets or sheep brain marrow. Chuan Huanglian (Coptidis Rhizoma) 1 liang: remove the rhizome base, chop, soak in one zhong of water for half a day, and extract the juice by steaming over boiling water. Tongbian (Urine of a healthy child) 1 zhong: use urine from a healthy male infant of six months old, mix with the Huanglian juice to make one bowl.

Place the Ludongshi in a tilted silver jar and calcine over charcoal fire until it turns azure green. Remove and quench with the Huanglian juice and Tongbian mixture. Repeat this quenching process seven times. Add Zhusha (Cinnabar) 3 qian and grind together into a fine powder. Use the water levigation method (shuifei) to remove impurities, dry, and grind again until extremely fine like dust. Store for use; this is called "Dan Tou" (Base of the Elixir). Separately prepare Zhenzhu Mo (Pearl Powder): take a small amount of pearl, place it inside tofu, steam in a bowl for one shichen (two hours), grind to an extremely fine consistency, and store for use.

Take 1 qian of Dan Tou, add 1 fen of Zhenzhu Mo, grind and mix thoroughly. Add Bingpian (Borneolum Syntheticum) 3 fen, blend uniformly, and seal in a porcelain jar. For all types of external eye obstructions, dip a silver or ivory hairpin into the medication and apply it to the inner canthus. Keep eyes closed for the duration of a meal, then use the pin to remove any residual powder. Apply once after breakfast, or at night.

Zhen Huangdan (Lead Monoxide) 5 liang: grind finely, wash with water (levigation), dry, wrap in thick cotton paper, and stir-fry in a pot until cooked. Remove and cool on the ground. Repeat frying and cooling nine times to eliminate lead toxicity. Grind to a dust-like fineness for use. Chuan Huanglian (cleaned, 2 liang, chopped); Shiyan (Swallow Stone) one male and one female, large ones the size of betel nut, equal parts with Shixie (Crab Stone), crushed into powder and washed with water (levigated) for use; Shixie (Crab Stone) any quantity, equal parts with Shiyan (male/female), crushed into powder and washed with water (levigated) for use; Hezi (Terminalia chebula Retz.) 12 fruits; Xiongdan (Bear Bile) 3 qian or 5 qian (more yields faster results). To test authenticity: sprinkle powder on water surface, take a grain-sized amount, drop water on it; if the powder disperses, it is authentic. This is a divine product for eye medicines. Dong Baimiti (Winter White Honey) 8 liang, filtered clean.

First, decoct Huanglian and Hezi in three bowls of well water until reduced to one and a half bowls. Crush Shixie and Shiyan into fine powder, levigate with water, and mix with the decoction and honey. Slowly boil in a silver pot for three to five boils. Add Huangdan and continue boiling. Stir continuously clockwise with a willow, peach, or locust branch. Keep a basin of water nearby. If the mixture boils over, immediately place the pot in the water basin to cool. Cook until the syrup can draw threads (拉丝). Add Xiongdan and stir more than a hundred times. Do not allow chickens, dogs, strangers, or women to witness this process. This formula specifically treats various eye diseases in men and women, even restoring vision after ten years of blindness. Apply a quantity equivalent to two clam shells daily, 5, 7, or 9 times per day. Do not apply to both eyes simultaneously. Apply for seven days initially, stop for three to five days, then resume application for seven days. Use rush pith (Dengcao) to probe and remove opacities; vision will naturally clear. For severe cases, within twenty-one days (three sevens), miraculous effects are observed.