一名千里光。得水中之阴气以生，味咸，气寒，无毒。入足厥阴经。厥阴开窍于
目，血虚有热则青盲，赤痛障翳，咸寒止利除热，所以能主诸目疾，入肾补阴益精也。
研细水飞点目，亦消外障，痘后眼目生翳，用石决明、谷精草等分研细，猪肝蘸食即
退。七孔九孔者。良，十孔者不佳。凡用以面裹煨熟，磨去粗皮，捣细如飞面，方堪入
药。得龙骨疗泄精。
石决明，内服开清盲，消翳障，外点赤膜退，外障除，又治骨蒸痨热。兼通五淋
久服亦能益精。
主治（痘疹合参） 治痘后目中翳障。
味甘、平。气微寒、无毒，内应乎肝。入足厥阴、少阳、少阴，兼入手少阴、阳明
经。夫龙禀阳气以生。而伏于阴，为东方之神，乃阴中之阳，鳞虫之长。神灵之物也。
神也者，两精相合，阴阳不测之谓。神则灵，灵能辟邪恶蛊毒魇魅之气，及心腹鬼疰
精物也。咳逆者，气不归元也。气得敛摄而归元，则咳逆自止，其性涩以止脱，故能止
泻痢脓血及女子漏下也。小儿心肝二脏，虚则发热，热则惊痫，惊气入腹，则心腹烦
满，敛摄二经之神气而平之，则热气散而惊痫，及女子烦满自除也。肝气贼脾，脾主四
肢，故四肢痿枯，肝宁则热退而脾亦获安。故主之也。心气不收则汗出，肝、心、肾三
经虚，则神魂不安而自惊。收敛三经之神气，则神魂自安，升降利而喘息自平，汗自
止也。肝气独盛，则善恚怒；魂返乎肝，则恚怒自除。小肠为心之腑，膀胱为肾之腑，
三经之气虚脱，则小便多而不禁。脏气敛。则腑亦随之，故能缩小便及止梦遗泄精、小
便泄精，兼主尿血也。其能养精神，定魂魄，安五脏者，乃收摄神魂，闭涩精气之极
功也。又主 瘕坚结，肠痈内疽，阴蚀者，以其能引所治之药，粘着于所患之处也。
按∶龙骨入心，肾、肠、胃、龙齿单入肝心，故骨兼有止泻涩精之用；齿惟镇惊安魂
魄而已。凡用龙骨酒浸一宿，焙干研粉，水飞三度用。如急用以酒煮，焙干。或曰凡入
药，须水飞过晒干，每斤用黑豆一斗，煮一伏时晒干用，否则，着入肠胃，晚年作热也。
龙骨，主咳逆泻痢，心腹鬼痤涩肠，止泻收敛，浮越正气，止肠风来红，生肌敛疮
脱肛，及妇人带下崩中， 瘕坚结，小儿热气惊痫，心腹烦病。四肢枯痿，夜卧自惊。
恚怒伏气不得喘息，肠痈内疽阴蚀，小便尿血泄精。养精神，定魂魄，安五脏，缩小
便，固虚汗，禁梦遗诸症。总去脱固气涩肠之物，久服反致涸精燥热之端。龙齿专主安魂狂热，并杀蛊毒。
主治（痘疹合参） 痘疹中惟滑泄者。暂入丸中用。
石决明，别名千里光。它吸收水中的阴气而生，味道咸，性质寒，没有毒性。归入足厥阴肝经。厥阴经的窍穴在眼睛，如果血虚且有热，就会导致青盲（视力减退或失明）、眼睛红肿疼痛、生翳障，石决明味咸性寒，能止利除热，所以能够主治各种眼疾，同时入肾补阴益精。将其研成细粉，用水飞法处理后点眼，也能消除外障；痘疹痊愈后眼睛生翳，可用石决明和谷精草各等分研细，蘸猪肝食用即可消退。七孔或九孔的石决明品质优良，十孔的品质不佳。凡是用石决明，需用面粉包裹煨熟，磨去粗皮，捣碎如飞面般细腻，才适合入药。与龙骨配伍可以治疗遗精滑泄。
石决明内服可开通清盲，消除翳障，外用点眼可使赤膜退去，外障消除，还能治疗骨蒸痨热。兼治五淋，久服也能益精。
主治（结合痘疹治疗）：治疗痘疹后眼中出现的翳障。
龙骨，味道甘平，性质微寒，无毒，内应于肝脏。归入足厥阴肝经、少阳胆经、少阴肾经，兼入手少阴心经、手阳明大肠经。龙禀受阳气而生，却潜伏于阴中，是东方之神，属于阴中之阳，是鳞虫之长，是有神灵之物。“神”的概念，是指两精相合，阴阳变化莫测的状态。神具有灵性，能够辟除邪恶、蛊毒、魇魅之气以及心腹间的鬼疰精物。咳逆是因为气不归元。气得到收敛摄纳而回归本源，咳逆自然停止。龙骨的性质涩滞以固脱，所以能止泻痢脓血及女子漏下（非经期阴道出血）。小儿的心肝二脏虚弱则发热，热盛则引发惊痫，惊气入腹，导致心腹烦满。龙骨收敛摄纳心肝二经的神气使之平和，热气散尽，惊痫及女子的烦满症状自然消除。肝气过盛会克制脾土，脾主四肢，所以出现四肢痿枯，肝气安宁则热退而脾亦得安，因此龙骨主治此症。心气不收则汗出，肝、心、肾三经虚弱，则神魂不安而自惊。收敛这三经的神气，则神魂自安，气机升降通畅，喘息自平，汗自止。肝气独盛，则容易愤怒；魂返回肝脏，则愤怒自除。小肠是心的腑，膀胱是肾的腑，这三经之气虚脱，则小便多且不禁。脏气收敛，腑气也随之收敛，所以能缩小便及止梦遗滑精、小便带精，兼治尿血。龙骨能养精神、定魂魄、安五脏，这是收摄神魂、闭涩精气的极致功效。又主治瘕坚结（腹部积块坚硬）、肠痈内疽、阴蚀（外阴溃烂），因为它能引导所治疗的药物粘着于患处。
按语：龙骨入心、肾、肠、胃经，龙齿单入肝、心经，所以龙骨兼有止泻涩精的作用；龙齿仅用于镇惊安魂魄罢了。凡使用龙骨，需酒浸一夜，焙干研粉，水飞三次使用。如急需使用，可用酒煮，焙干。有人说凡入药，必须水飞晒干，每斤用黑豆一斗，煮一个时辰后晒干使用，否则，进入肠胃，晚年会产生热病。
龙骨，主治咳逆泻痢，心腹鬼痤涩肠，止泻收敛，浮越的正气，止肠风便血，生肌敛疮，脱肛，以及妇人带下崩中，瘕坚结，小儿热气惊痫，心腹烦病，四肢枯痿，夜卧自惊，愤怒伏气不得喘息，肠痈内疽阴蚀，小便尿血泄精。养精神，定魂魄，安五脏，缩小便，固虚汗，禁梦遗诸症。总之，它是去除脱失、固气涩肠的药物，久服反而会导致涸精燥热的弊端。龙齿专门主治安魂狂热，并杀蛊毒。
主治（结合痘疹治疗）：痘疹中只有滑泄者，暂时入丸剂中使用。
Bivalve Shell (Shi Jue Ming), also known as Qianli Guang. It is generated by absorbing the Yin Qi of water, has a salty flavor and cold nature, and is non-toxic. It enters the Foot Jueyin Liver Meridian. The Jueyin meridian opens into the eyes; when blood deficiency with heat occurs, it leads to Qingmang (blindness or severe visual impairment), redness, pain, and nebulae. Due to its salty and cold properties that stop diarrhea and clear heat, it can primarily treat various eye diseases, and entering the Kidney, it tonifies Yin and benefits essence. When ground into fine powder, processed by water levigation, and applied to the eyes, it can also eliminate external nebulae. For nebulae appearing in the eyes after smallpox/variolae, use equal parts of Bivalve Shell (Shi Jue Ming) and Corchori Semen (Gujingcao) ground finely, dipped in pig liver and consumed to make them recede. Those with seven or nine holes are of good quality; those with ten holes are inferior. For medicinal use, wrap it in flour and roast until cooked, grind off the rough skin, pound into a fine powder resembling levigated flour, before it is suitable for decoction. Paired with Dragon Bone (Longgu), it treats seminal emission.
Orally administered, Bivalve Shell (Shi Jue Ming) clears blindness, eliminates nebulae; externally applied, it reduces red membranes and removes external nebulae. It also treats bone-steaming consumptive fever. It additionally treats the five types of strangury (Wulin); long-term use can also benefit essence.
Main Indications (Integrated with Smallpox/Varicella Treatment): Treats nebulae in the eyes following smallpox/variolae.
Dragon Bone (Longgu), has a sweet and neutral flavor, slightly cold nature, and is non-toxic. Internally corresponds to the Liver. It enters the Foot Jueyin Liver Meridian, Foot Shaoyang Gallbladder Meridian, and Foot Shaoyin Kidney Meridian, and additionally enters the Hand Shaoyin Heart Meridian and Hand Yangming Large Intestine Meridian. The dragon embodies Yang Qi but hides within Yin; it is the Spirit of the East, representing Yang within Yin, and the leader of scaled creatures, a spiritual entity. "Spirit" refers to the union of two essences, where Yin and Yang interact unpredictably. Spirit possesses agility and can repel evil, gu poison, nightmare spirits, and ghostly influences affecting the heart and abdomen. Cough and upward rushing of Qi occur because Qi fails to return to its root. When Qi is astringed and returned to its root, cough and upward rushing cease naturally. Its astringent nature prevents collapse, thus it can stop dysentery with pus and blood, and metrorrhagia in women. When the Heart and Liver viscera of children are deficient, heat arises; excessive heat causes fright and convulsions. If frightful Qi enters the abdomen, it causes fullness and irritability in the heart and abdomen. By astringing and pacifying the Shen (Spirit) of these two meridians, heat dissipates, and fright, convulsions, and female irritability are removed. Excessive Liver Qi overacts on the Spleen; since the Spleen governs the four limbs, this results in flaccidity and atrophy of the limbs. When the Liver is pacified, heat recedes, and the Spleen is also soothed; hence, it is indicated for these conditions. If Heart Qi fails to retain, sweating occurs. Deficiency in the Liver, Heart, and Kidney meridians leads to unsettled Hun and Po (Soul and Spirit), causing spontaneous fright. Astringing the Shen of these three meridians allows the Hun and Po to settle, regulating ascending and descending movements, calming wheezing, and stopping sweating. Excessive Liver Qi leads to anger; when the Hun returns to the Liver, anger subsides. The Small Intestine is the Fu organ of the Heart, and the Bladder is the Fu organ of the Kidney. Deficiency and collapse of Qi in these three meridians result in polyuria and incontinence. When Zang Qi is astringed, Fu Qi follows suit; thus, it can reduce urination, stop nocturnal emission and seminal leakage, and treat hematuria. Its ability to nourish spirit, stabilize soul, and calm the five viscera stems from the ultimate efficacy of gathering Shen and securing essence. It also treats hard abdominal masses (Jiajianjie), intestinal abscesses, internal ulcers, and genital erosion, because it can guide therapeutic herbs to adhere to the affected areas.
Note: Dragon Bone (Longgu) enters the Heart, Kidney, Intestine, and Stomach meridians, while Dragon Tooth (Longchi) enters only the Liver and Heart meridians. Therefore, Dragon Bone (Longgu) has the additional function of stopping diarrhea and astringing essence; Dragon Tooth (Longchi) is solely used to calm fright and stabilize the soul. For usage, soak Dragon Bone (Longgu) in wine overnight, dry by roasting, grind into powder, and process by water levigation three times. For urgent use, boil in wine and dry by roasting. Some say that for medicinal use, it must be water-levigated and sun-dried; for every jin (500g), use one dou (approx. 10L) of black beans, boil for one shichen (2 hours), then sun-dry. Otherwise, entering the intestines and stomach, it may cause heat disorders in later years.
Dragon Bone (Longgu) treats cough and upward rushing, dysentery, abdominal spasms due to ghostly influence, astringent intestines, stops diarrhea, consolidates, raises floating Zheng Qi, stops wind-intestinal bleeding, generates flesh, heals sores, rectal prolapse, leukorrhea and metrorrhagia in women, hard abdominal masses, pediatric heat-induced fright and convulsions, heart-abdominal irritability, limb atrophy, spontaneous fright during sleep, anger, stagnant Qi preventing normal breathing, intestinal abscesses, internal ulcers, genital erosion, hematuria, and seminal emission. It nourishes spirit, stabilizes soul, calms five viscera, reduces urination, secures deficiency sweating, and prohibits nocturnal emission. In summary, it is an agent that prevents loss and consolidates Qi by astringing the intestines; long-term use may instead lead to depletion of essence and dryness-heat. Dragon Tooth (Longchi) specifically treats calming fright and hyperthermia, and kills gu poison.
Main Indications (Integrated with Smallpox/Varicella Treatment): Only used temporarily in pill form for cases of slippery diarrhea during smallpox/variolae.