大熟地（八两） 山药（四两） 山萸肉（四两） 龟胶（切碎，炒珠，四两） 枸杞子（三两） 菟丝子
（三两） 鹿角胶（三两，打碎炒珠） 川牛膝（酒炒蒸熟，四两） 先将熟地杵膏，加群药和捣，炼蜜丸桐子大。
每食前白滚水下百丸。
翳者，乃血气津液凝而不行，结聚而成云翳。然必要明经络，庶能应手，照羌活胜风汤引经加减用之。
云翳根在肝、肺上，先发散头目者，何也？大凡眼中云翳，由肝、肺而上升于目。庸医多用寒凉清火
之药，将经络凝结，气血不得升降。非发散之剂，云翳不能开。是以下手先用发散之药，使经络通利，云
膜浮虚，以便于点。若遽用吹法，吹的虚了，云膜反不能退。
次用大决明散者，何也？白珠赤丝，根生于肺；黑睛翳膜，根生于肝。必用决明散，把肝肺上火结
的障膜滋润虚浮，与肝、肺离开，好行揭障吹冲之法。
决明散后即服揭障丹者，何也？肝、肺上翳膜，将通明之孔窍闭塞，光明不得上升于目，是以渐昏
渐暗，蔽锢失明。所以然者，肝、肺二经，肾经之道路也；道路阻滞，灵明由何处发出？须服揭障丹，把
肝、肺上障膜阻塞通明之孔窍者揭下来，不绵缠粘泥于上，好用吹冲法。
内服揭障丹，外用十大将军冲翳散者，何也？肝、肺上障，虽则揭下来，若不用吹法吹出，药力尽时，
遇煎炒炙 、七情六欲，障膜又长在肝、肺上，合而为一。邪火日盛，云膜日增，服药的时节好了，不用
药的时节又犯了，这是病根未除，速用冲翳散，将揭下来的内障自口内吐出，肝、肺上无有障膜扯着眼中
红丝，云翳自然退的净了。可见五脏六腑之清气升，目光明；浊气升，目昏暗。海内名人，眼药退云翳
者多，但能退浊气，不能升清气，以肝、肺本源不清净耳！
云翳既自肝、肺而生于眼目，是钩割不得的。人能割眼中之翳，岂能割肝、肺之翳乎？既不能割肝、
肺之翳，岂能保眼中之翳割而不复生乎？钩割之非，于此可悟。
点退翳膜，双目光明。或微带翳膜，不能除净，双目昏暗。末用补脑还睛丸者，何也？人之五脏六
腑、十二经络、三百六十脉络，其精气上贯于脑，下联脏腑，上下往来，以通血脉，滋养于目。是脑为
聚精华之源，吹冲后脑中空虚，当用补脑还睛丸也。
大凡内、外障翳之生也，由心火克于肺金，肺金克于肝木，木受金克，肝气上冲，脑汁下坠，由目
系而入。浸淫于外，随人感之轻重，变作外障四十九候；浸淫于内，入于金井，随人感之轻重，变
作内障二十三样。用真人一段工夫，五脏净洁，气血流通，生生自然之理，为生生自然之用，毫不阻
碍，病何自而生？此釜底抽薪之法也。自开功以至收功，层次极多，功夫极久，须要谨忌色欲，少言
语，节饮食，止劳碌，慎起居，避风寒，闭目静养，回避人事，才可拨暗重明。若悠忧怠忽，功夫作
辍，有始无终，不能痊愈，慎之！嘱之尤须忌烟、酒、腥荤、葱蒜、煎炒、动火等物。
脉理秘诀，当照《审视瑶函》中脉看，《瑶函》与《秘诀》，相为表里也。眼症根生于肝、肺二经，极重
者非《秘诀》不可；若症之轻者，《瑶函》中方极妙。不是个个俱用吹法。欲精《秘诀》，先习《瑶函》，此由浅
入深之理。其中五轮八廓、十二经络、相生相克道理，或虚或实景象，外障、内障门类，详细俱备，可为
后学阶级，如所载气为怒伤散而不聚之病，阴弱不能配阳之病，阳衰不能抗阴之病，气血不分混而遂
结之病，血为邪盛凝而不行之病，伤寒愈后之病，为物所伤之病，斑疹余毒之病，深疳为害之病，内急外
弛等症，俱是吹冲不得的。如瞳人散大、瞳人焦小、瞳人下陷、瞳人倒侧、瞳人青盲、瞳人血贯等症，更
是吹冲不得的。《瑶函》书，断断不可不看。若执定《秘诀》，一概治之，未有补救于人之处，即有陷害于人
之处。业斯道者，须要小心参悟。如认症不真，误投药饵，损人双目，获罪冥冥，祸延子孙，可不慎与！
夫人气血壮盛而目光明，气血虚弱而目昏暗。年过四十，阴气渐衰，理当养阴血以助光明。光明者
肾水也，肾水即气血之精粹者，上升于目而为明也。不是气血之外又有肾水。只养精血为主，精血必借
胃气生，胃乃五脏六腑之源，开发神光之本，宜先调胃气。
【左归丸方】
大熟地黄（八两）、山药（四两）、山茱萸肉（四两）、龟板胶（切碎，炒至呈珠状，四两）、枸杞子（三两）、菟丝子（三两）、鹿角胶（三两，打碎后炒至呈珠状）、川牛膝（用酒炒蒸熟，四两）。先将熟地黄捣成膏状，加入其余药物共同捣匀，用炼蜜制成如梧桐子大小的药丸。每餐前用白开水送服一百丸。
【论退翳之法】
云翳，是由于血、气、津液凝结而不运行，聚结而成。然而必须明确经络走向，才能做到手到病除，需参照羌活胜风汤的引经作用进行加减使用。
云翳的病根在肝、肺二经，为什么首先要用发散头目的药物呢？大凡眼中的云翳，都是由肝、肺上升于目所致。庸医多用寒凉清火的药物，导致经络凝结，气血无法升降。如果不是用发散的药物，云翳就不能消散。所以下手先用发散的药物，使经络通畅，云膜变得浮虚松动，以便于后续的点眼治疗。如果急于使用吹法（将药粉吹入眼中），把云膜吹得虚弱了，云膜反而不能消退。
其次为什么要用大决明散呢？白睛（巩膜）上的赤丝，病根生于肺；黑睛（角膜）上的翳膜，病根生于肝。必须用决明散，滋润并软化由肝肺火结而成的障膜，使其与肝、肺分离，从而便于施行揭障、吹冲等治疗方法。
决明散之后为什么要服用揭障丹呢？肝、肺上的翳膜会闭塞通明的孔窍，导致光明之气不能上升于目，所以视力逐渐昏花暗淡，遮蔽锢闭而失明。之所以这样，是因为肝、肺二经是肾经运行的道路；如果道路阻滞，灵明之气从哪里发出呢？必须服用揭障丹，将肝、肺上遮蔽通明孔窍的障膜揭下来，使其不绵软粘腻地附着在上面，以便好用吹冲法。
内服揭障丹，外用十大将军冲翳散，这是为什么呢？肝、肺上的障膜，虽然被揭下来了，但如果不用吹法将其吹出，当药力耗尽时，遇到煎炒炙烤的食物以及七情六欲的刺激，障膜又会重新长在肝、肺上，合而为一。邪火日益旺盛，云膜日益增多，服药期间好了，停药期间又复发，这是因为病根未除。应迅速使用冲翳散，将揭下来的内障从口中吐出，这样肝、肺上就没有障膜牵扯眼中的红丝，云翳自然就能退净。由此可见，五脏六腑的清气上升，目光就明亮；浊气上升，眼睛就昏暗。海内的名医，使用眼药退云翳的人很多，但大多只能退去浊气，不能升发清气，这是因为肝、肺的本源不清净啊！
云翳既然从肝、肺产生于眼目，就不是钩割手术所能治疗的。人能割掉眼中的翳，难道能割掉肝、肺中的翳吗？既然不能割除肝、肺的翳，怎么能保证眼中之翳被割除后不再复发呢？由此可以领悟钩割法的弊端。
点眼以退翳膜，双目光明。如果微带翳膜，不能除净，双目就会昏暗。最后为什么要用补脑还睛丸呢？人的五脏六腑、十二经络、三百六十脉络，其精气上贯于脑，下联脏腑，上下往来，以疏通血脉，滋养于目。所以脑是汇聚精华的源头，经过吹冲治疗后脑部中空虚，应当使用补脑还睛丸来填补。
大凡内、外障翳的产生，是由心火克制肺金，肺金克制肝木，肝木受肺金克制，肝气上冲，脑汁下坠，通过目系进入眼部。浸淫于外，随着人体感受邪气的轻重，变化为外障四十九种证候；浸淫于内，进入金井（瞳孔），随着人体感受邪气的轻重，变化为内障二十三样。运用真人的一段功夫，使五脏净洁，气血流通，顺应生生自然的道理，发挥生生自然的作用，毫不阻碍，疾病从何而生？这是釜底抽薪的方法。从开功到收功，层次极多，功夫极久，必须谨忌色欲，少说话，节制饮食，停止劳碌，谨慎起居，避开风寒，闭目静养，回避人事，才可以拨暗重明。如果忧愁怠慢，功夫时断时续，有始无终，就不能痊愈，务必慎重！嘱咐尤其要忌食烟、酒、腥荤、葱蒜、煎炒、动火等食物。
脉理秘诀，应当参照《审视瑶函》中的脉诊来看，《瑶函》与《秘诀》互为表里。眼症的病根生于肝、肺二经，病情极重的非《秘诀》不可；若症状较轻的，《瑶函》中的方剂非常精妙。并不是个个都要用吹法。想要精通《秘诀》，先要学习《瑶函》，这是由浅入深的道理。其中五轮八廓、十二经络、相生相克的道理，或虚或实的景象，外障、内障的门类，详细都具备，可以作为后学的阶梯，如所载气因怒伤而散聚失常的病，阴弱不能配阳的病，阳衰不能抗阴的病，气血不分混而遂结的病，血因邪盛凝滞不行的病，伤寒愈后的病，为物所伤的病，斑疹余毒的病，深疳为害的病，内急外弛等症，都是不能用吹冲法治疗的。如瞳人散大、瞳人焦小、瞳人下陷、瞳人倒侧、瞳人青盲、瞳人血贯等症，更是不能用吹冲法治疗的。《瑶函》这本书，绝对不能不看。如果固执地认定《秘诀》，一概用它来治疗，没有补救人的地方，甚至有陷害人的地方。从事这一行的人，必须小心参悟。如果认症不真，误投药饵，损害人的双目，获罪于冥冥之中，祸延子孙，能不慎重吗！
人的气血壮盛则目光明亮，气血虚弱则目光昏暗。年过四十，阴气逐渐衰退，理应养阴血以助光明。光明源于肾水，肾水即气血的精粹部分，上升于目而成为光明。并不是在气血之外还有肾水。只以养精血为主，精血必须借助胃气生成，胃是五脏六腑的源头，开发神光的根本，宜先调理胃气。
[Formula of Zuogui Wan]
Shu Di Huang (Rehmanniae Radix Preparata, 8 liang), Shan Yao (Dioscoreae Rhizoma, 4 liang), Shan Yu Rou (Corni Fructus, 4 liang), Gui Jiao (Testudinis et Chelonis Carapax et Plastrum, chopped and stir-fried until bead-like, 4 liang), Gou Qi Zi (Lycii Fructus, 3 liang), Tu Si Zi (Cuscutae Semen, 3 liang), Lu Jiao Jiao (Cervi Cornu Colla, 3 liang, broken and stir-fried until bead-like), Chuan Niu Xi (Achyranthis Bidentatae Radix, wine-stir-fried and steamed until cooked, 4 liang). First, pound the Shu Di Huang into a paste, add the remaining herbs and knead together, then use refined honey to make pills the size of Sophora japonica seeds. Take one hundred pills before each meal with plain boiled water.
[Discussion on Methods for Resolving Corneal Opacities]
Cloudy opacities (Yi) are formed when blood, qi, and body fluids coagulate and fail to circulate, gathering to form cloud-like membranes. However, one must clearly understand the meridians to achieve effective treatment; modifications should be made based on the meridian-guiding actions of Qiang Huo Sheng Feng Tang.
The root of cloudy opacities lies in the Liver and Lung meridians. Why is it necessary to first use dispersing agents for the head and eyes? Generally, cloudy opacities in the eyes ascend from the Liver and Lung to the eyes. Quack doctors often overuse cold and cooling drugs to clear fire, causing the meridians to coagulate and preventing the ascent and descent of qi and blood. Without dispersing agents, the cloudy opacities cannot dissipate. Therefore, one must first use dispersing drugs to unblock the meridians, making the cloudy membrane loose and floating, which facilitates subsequent topical treatments. If one rashly uses the "blowing method" (blowing medicated powder into the eye) to weaken the membrane, the cloudy opacity may actually fail to recede.
Why is Da Jue Ming San used next? Red filaments on the white sclera originate from the Lung; opacities on the black cornea originate from the Liver. One must use Jue Ming San to moisten and soften the obstructive membranes caused by fire accumulation in the Liver and Lung, separating them from the Liver and Lung, thereby facilitating the application of methods to lift obstructions and blow medicated powders.
Why take Jie Zhang Dan after Jue Ming San? Obstructive membranes in the Liver and Lung block the clear orifices, preventing the light qi from ascending to the eyes, leading to gradual dimness and eventual blindness due to obstruction. This occurs because the Liver and Lung meridians are pathways for the Kidney meridian; if these pathways are blocked, where can the spiritual clarity emerge? One must take Jie Zhang Dan to peel off the obstructive membranes blocking the clear orifices in the Liver and Lung, ensuring they do not adhere loosely and sticky to the surface, thus preparing for the blowing method.
Why combine internal administration of Jie Zhang Dan with external application of Shi Da Jiang Jun Chong Yi San? Although the obstructive membranes in the Liver and Lung have been peeled off, if they are not blown out, once the medicinal power fades, exposure to fried foods and emotional disturbances will cause the membranes to reattach to the Liver and Lung as one entity. Evil fire increases daily, and the cloudy membranes grow thicker. The condition improves while taking medicine but relapses when stopping, indicating the root cause remains. One must promptly use Chong Yi San to expel the internal cataracts/opacities through the mouth. This removes the traction on the red filaments in the eye caused by obstructions in the Liver and Lung, allowing the cloudy opacities to naturally recede completely. Thus, it is seen that when the clear qi of the five zang and six fu organs ascends, vision becomes bright; when turbid qi ascends, vision becomes dim. Many renowned physicians domestically use eye drops to resolve opacities, but most can only dispel turbid qi without raising clear qi, because the source in the Liver and Lung is not pure!
Since cloudy opacities arise from the Liver and Lung and manifest in the eyes, they cannot be treated by hook-and-cut surgery. Can one cut the opacity in the eye, but also cut the opacity in the Liver and Lung? Since one cannot remove the opacity in the Liver and Lung, how can one ensure that the eye opacity does not recur after cutting? From this, the flaws of the hook-and-cut method can be understood.
Topical application to resolve opacities restores brightness to both eyes. If slight opacities remain and cannot be completely removed, both eyes will become dim. Why use Bu Nao Huan Jing Wan at the end? The essence and qi of the five zang and six fu organs, twelve regular meridians, and three hundred and sixty collateral vessels ascend to the brain and connect downwards to the organs, circulating up and down to unblock blood vessels and nourish the eyes. The brain is the source where essences gather. After the blowing and flushing treatments, the brain becomes hollow and empty; therefore, Bu Nao Huan Jing Wan should be used.
Generally, the generation of internal and external cataracts/opacities results from Heart Fire overcoming Lung Metal, and Lung Metal overcoming Liver Wood. With Liver Wood suppressed by Lung Metal, Liver Qi rushes upward, and brain fluid descends, entering via the optic nerve system. Penetrating outward, depending on the severity of pathogenic invasion, it transforms into forty-nine types of external obstructions; penetrating inward, entering the Golden Well (pupil), depending on the severity, it transforms into twenty-three types of internal obstructions. By applying the effort of a true practitioner to cleanse the five zang organs, promote the flow of qi and blood, and follow the natural law of generation, utilizing this natural generative function without obstruction, how can disease arise? This is the method of removing firewood from under the cauldron (addressing the root). From opening the merit to closing the merit, there are many levels and a long duration of practice. One must strictly avoid sexual indulgence, speak little, regulate diet, cease overwork, be cautious in daily life, avoid wind and cold, rest with closed eyes, and avoid social affairs to restore clear vision. If one is anxious, negligent, discontinuous in practice, or lacks perseverance, recovery will not be achieved. Be extremely cautious! It is especially emphasized to avoid tobacco, alcohol, fishy/meaty foods, scallions, garlic, fried foods, and other heat-inducing substances.
For pulse diagnosis secrets, one should refer to the pulse readings in *Shen Shi Yao Han* (Mirrors of Ophthalmology); *Yao Han* and *Mi Jue* (Secrets) complement each other as exterior and interior. Eye conditions rooted in the Liver and Lung meridians require *Mi Jue* for severe cases; for mild cases, formulas in *Yao Han* are excellent. Not every case requires the blowing method. To master *Mi Jue*, one must first study *Yao Han*, following the principle of progressing from shallow to deep. It details the Five Wheels and Eight Palaces, twelve meridians, mutual generation and restriction theories, patterns of deficiency and excess, and categories of external and internal obstructions, serving as a ladder for students. Examples include diseases where qi is scattered and fails to gather due to anger, diseases where yin weakness fails to match yang, diseases where yang decline fails to resist yin, diseases where qi and blood mix and congeal, diseases where blood coagulates and fails to move due to evil abundance, post-typhoid fever conditions, injuries from foreign objects, residual toxins from maculopapular rashes, damage from severe malnutrition (gan syndrome), and symptoms like internal tension with external flaccidity—all of which are contraindications for the blowing and flushing methods. Conditions such as dilated pupil, shriveled small pupil, sunken pupil, inverted pupil, blind pupil, and blood-filled pupil are even more strictly contraindicated for the blowing method. *Yao Han* must absolutely be read. If one rigidly adheres to *Mi Jue* and treats all cases uniformly, there is no room for remediation, and it may even lead to harm. Practitioners must carefully contemplate. If misdiagnosis leads to incorrect prescription, damaging patients' eyes, one incurs karmic retribution and brings disaster upon descendants. How can one not be cautious!
When qi and blood are robust, vision is bright; when qi and blood are weak, vision is dim. After age forty, yin qi gradually declines, so one should nourish yin and blood to assist brightness. Brightness originates from Kidney Water; Kidney Water is the essence of qi and blood, ascending to the eyes to create vision. There is no Kidney Water separate from qi and blood. The primary focus should be on nourishing essence and blood, which must rely on Stomach Qi for production. The Stomach is the source of the five zang and six fu organs and the foundation for developing spiritual light; therefore, regulating Stomach Qi should be prioritized.