逆障上弦生，垂帘浪得名。蹉跎年月久，混沌始漫睛。有犯加凝滞，方才变赤疼。数般相似处，辨别要分明。
此证生于风轮上半，渐掩瞳神。不论浓薄，但在外色淡白者是。若红赤，必触犯搏动其火，乃变增，非本病
也。盖缘目素疾作，不能相时制服，徒以辛凉散降，败其血而郁其火，风轮渐渐伤残，年久不痊而致。医非良明，
与主不笃信，诚恐永为痼疾。其初起神水清，乃退后膏涩，结而成
者。此精衰火灼，益宜深心体认，不可草草施药。或谓障从上生，合称顺，胡为逆？此指火而言，夫火性上炎，
今下垂，逆其道耳，因云逆。又状其自上而下，故曰垂帘。为治，当察其苦乐，审其脉体，问其喜恶，验其点眼
药，既详且悉，然后对病处方，大约不外逍遥、四物加味、吞千金磁朱丸。不效，改用助阳活血解郁润燥，日以
芙蓉镜，夜换空青石，合点无不愈者。如初患暴症，见障似此，须从彼论治，不在斯例。然总须心细眼明，若虚
应故事，药石必致差错，转为赤脉贯睛，再变为彩云捧日，即龙树医王，能减而不能痊。
羞答 娥面，偷云出照人，晕生风起易，虹贯祸弥殷，无复清晖影，空留病业身。幽怀言不得，一望泪沾巾。
此症初起，势甚轻微，次后始赤涩有泪，浑睛生障多，脉与眵，日久诸轮廓皆坏，虽略能行走，瞳子不见影
动，且障稍高于睛，状如小小狗肾，故独以膜名。前后均无痛苦，缓而不变，却最难愈。往见少年患此，市人呼
赤觑赤瞎，不辄于以终老，良可永叹。病由俭啬劳役残弊肌骨，或从欲嗜味耗损真元，荏苒无形燥火，深潜在经，
爰抱斯疾。医宜应机投药，非若有形风热之可散可攻也。假障上有星月蚀入，病似增而减翻速，盖火郁既发，烟
不再生。然亦宜因上穷因，境中索境，得其情，更勿循守故辙，舍症从脉，聚宝成丹，点不计工，服无吝费。有
日开雾见天，向笑而赤觑赤瞎者，窃恐为赤觑赤瞎所笑耳。
族叔正坤，壮岁已得是症。逮受杖，列上宾不杖乡杖国
而杖家矣。时余甫业兹术，看其障虽近白膜，觉尚松而不光滑，为 去睑内外椒粟，以八宝空青石、芙蓉镜、加
味磁朱丸昼夜点服，间煎神效黄 、全真一气汤，凡四阅月全清，不惟不需杖，黑夜常出市肆间谈，如此十数年
乃谢世。其子某某不德余，凡内戚问尊翁双睛久瞽重光之由，辄对曰∶天数。嗟夫！坤叔寿而康，或天也，数能
使目中瞳子老而还少耶？
新城杨孕初先生，父子青年进士。每书札相招， 称侄不言弟。盖余常主其馆，友善太翁暨诸父故也。切思
守谦主敬，固士大夫本色。医，贱役也，纵学术兼优，车笠不渝盟已耳。乃谨 父执古礼，视某某天数之对渺若
山河。
逆障（一种眼病，指白膜从上方垂下遮蔽瞳孔）在上弦月时生成，垂帘障（因形态如垂下的帘幕而得名）徒有虚名。拖延年月已久，混沌之气开始弥漫遮蔽睛珠。若病情加重并出现凝滞，才会变为红赤疼痛。这些症状有许多相似之处，辨别时必须分明。
此证生于黑睛（风轮，即角膜）的上半部分，逐渐掩盖瞳神（瞳孔）。不论厚薄，只要外部颜色淡白便是。如果是红赤色，必定是触犯了搏动之火，导致病情增加，并非本病。大概是因为眼睛原本就有疾作，不能适时制服，仅仅使用辛凉发散降火的方法，败坏了血液而郁结了火气，导致黑睛渐渐伤残，年久不愈而致成此病。医生如果不是高明良医，或者患者对主治医生不笃信，恐怕会成为顽固难治的疾病。其初起时神水（房水）清澈，后来膏涩（晶状体或混浊物）凝结而成。这是精气衰败、火邪灼烧所致，更应深入体会认识，不可草率用药。有人说障从上方生成，应该称为顺证，为什么说是逆证？这是指火而言，火性上炎，现在却下垂，违背了火的特性，所以称为逆。又形容其自上而下覆盖，所以叫垂帘。治疗时，应当观察患者的苦乐感受，审察脉象，询问喜恶，验证之前点用的眼药，既详细又周全，然后对症处方，大致不外乎逍遥散、四物汤加味，以及吞服千金磁朱丸。如果无效，改用助阳活血、解郁润燥的方法，白天用芙蓉镜（一种眼药水或制剂），晚上换用空青石（矿物药）合点，没有不痊愈的。如果是初患暴发性病症，见到类似此障的情况，必须按照那种病症论治，不在此例。然而总须心细眼明，如果敷衍了事，药物必然导致差错，转变为赤脉贯睛（血管长入黑睛），再变为彩云捧日（虹膜脱出等严重并发症），即使是龙树菩萨那样的神医，也只能减轻而不能痊愈。
羞答答的美貌面容，偷偷地云开露出照人，晕生风起容易，彩虹贯穿祸患更加深重，不再有清明的光辉倒影，只空留病弱之身。幽深的情怀无法言说，一望之下泪水沾湿手巾。
此症初起，势头非常轻微，随后才出现红赤涩痛且有眼泪，浑睛（角膜及巩膜）生障较多，伴有脉象变化和眼屎，日子久了各种轮廓都毁坏，虽然略能行走，但瞳孔不见光影移动，且障稍高于睛珠，形状像小小的狗肾，所以单独以“膜”命名。前后都没有痛苦，发展缓慢且不变化，却最难治愈。以往见过少年患此病，市井之人称之为“赤觑赤瞎”（红眼失明），不久便以此终老，实在令人长久叹息。病因在于吝啬劳役残损肌骨，或者纵欲嗜食美味耗损真元，无形燥火潜藏在经络中，于是抱有此疾。医生应当随机投药，不像有形风热那样可以散发攻逐。假如障上有星月蚀入（指病变侵入），病势看似增加而减退反而迅速，这是因为火郁已经发泄，烟雾不再产生。但也应当向上追溯病因，在境况中探寻病机，得其真情，更不要墨守成规，舍弃症状而从脉象入手，聚宝成丹，点眼不计工时，服药不惜费用。有的人雾散见天，向那些曾嘲笑他是“赤觑赤瞎”的人微笑，我私下担心反被他们嘲笑。
族叔正坤，壮年时已得了这个病。等到受杖刑时，列于上宾之位，不在乡杖、国杖之列，而在家里受杖罢了。当时我刚学习这门医术，看他的障虽然接近白膜，觉得尚松而不光滑，为他去除眼睑内外的椒粟（麦粒肿或滤泡增生），用八宝空青石、芙蓉镜、加味磁朱丸昼夜点眼和服用，间或煎煮神效黄芪汤、全真一气汤，总共四个月全部清除干净，不仅不需要受杖，黑夜也常出来在市肆间交谈，如此十多年后才去世。他的儿子某某对我无礼，凡是内戚问起尊翁双目久盲复明的原因，总是回答说：天数。唉！坤叔长寿而健康，或许是天命，但天数能使眼中瞳孔变老后还童吗？
新城杨孕初先生，父子都是青年进士。每次书信招请，自称侄儿不言弟弟。大概因为我常在他家做馆师，友善对待太翁及各位长辈的缘故。思考谦恭主敬，固然是士大夫的本色。医生是低贱的职业，纵然学术兼优，车笠之盟（指富贵不忘贫贱之交的情谊）不变罢了。他却谨守父亲辈的古礼，视某某关于“天数”的回答渺小得像山河一样遥远。
Nizhang (a type of eye disease where the white membrane descends from above to cover the pupil) arises during the waxing moon phase, and Chuilianzhang (named for its curtain-like appearance) is merely a nominal term. After years of delay, chaotic qi begins to spread and obscure the eyeball. If the condition worsens with stagnation, it transforms into redness and pain. These symptoms share many similarities, so differentiation must be clear.
This syndrome arises in the upper half of the Fenglun (Wind Wheel, i.e., the cornea), gradually covering the Tongshen (pupil). Regardless of thickness, if the external color is pale white, it fits this description. If it is red, it indicates contact with pulsating fire, leading to an increase in pathology, which is not the original disease. This is likely due to pre-existing ocular disturbances that were not controlled in time; merely using acrid-cool dispersing and descending methods damaged the blood and trapped the fire, causing gradual injury to the Fenglun over many years without cure. If the physician is not highly skilled, or if the patient lacks firm faith in the treatment, it may become a chronic, stubborn ailment. Initially, the Shenshui (aqueous humor) is clear, but later, Gao Se (opacity or turbidity) condenses to form the obstruction. This results from essence depletion and fire scorching; deep contemplation is required, and medication should not be administered carelessly. Some argue that since the obstruction arises from above, it should be called a "Shun" (smooth/favorable) pattern, why call it "Ni" (reverse/unfavorable)? This refers to fire: fire nature ascends, but here it descends, violating its natural course, hence termed "Ni". Furthermore, its downward coverage justifies the name "Chuilian" (Curtain). Treatment requires observing the patient's comfort or distress, examining the pulse, asking about preferences, and verifying previous eye drops used. Only after detailed assessment should one prescribe. Generally, treatments include Xiaoyao San (Free and Easy Wanderer Powder), Siwu Tang (Four Substance Decoction) with modifications, and swallowing Qianjin Cizhu Wan (Thousand Gold Magnetite Pill). If ineffective, switch to methods that tonify yang, invigorate blood, resolve depression, and moisten dryness. Apply Furong Jing (Hibiscus Mirror preparation) by day and Kongqing Shi (Azurite/Mineral preparation) by night; combined application ensures recovery. For acute onset cases presenting similar obstructions, treat according to those specific patterns, not this example. However, one must always be meticulous and perceptive; perfunctory practice leads to medication errors, transforming the condition into Chimai Guan Jing (red vessels penetrating the cornea), and eventually Caiyun Peng Ri (colorful clouds embracing the sun/severe iris prolapse). Even if Longshu Yiwang (Bhaisajyaguru/Vaiduryaprabha Rajaraja Buddha, referred to as a supreme healer) were present, he could only alleviate, not cure.
Like a shy beauty, peeking through clouds to shine upon people; halos arise with wind, rainbows pierce bringing deeper disaster; no clear reflection remains, only a sickly body persists. Deep feelings cannot be spoken; one glance brings tears to wet the handkerchief.
This syndrome starts mildly, later developing redness, astringency, tearing, and multiple opacities on the Hunjing (cornea/sclera). It involves pulse changes and discharge. Over time, all contours are destroyed. Though walking may remain slightly possible, the pupil shows no light movement. The obstruction sits slightly higher than the eyeball, resembling a small dog kidney, thus named "Membrane". There is no pain initially or later; it progresses slowly without change, making it hardest to cure. I have seen youths suffer this, called "Chi Qu Chi Xia" (Red Eye Blindness) by commoners, ending their lives prematurely—a cause for lasting sighs. The etiology lies in frugality and labor damaging muscles and bones, or indulgence in desires and rich flavors depleting true yuan. Formless dry fire hides deep within the meridians, causing this illness. Physicians must administer medicine according to the moment; unlike tangible wind-heat which can be dispersed or attacked, this requires different handling. If star-like or moon-like erosions appear on the obstruction, the disease seems to worsen but recedes quickly because the trapped fire has vented, and smoke will not regenerate. Nevertheless, one must trace causes upward and seek mechanisms within the context, grasping the true nature. Do not stick to old routines; abandon symptom-focused approaches for pulse-based analysis. Gather treasures to make elixirs, apply drops regardless of effort, take herbs without sparing cost. Some may see the fog lift and sky appear, smiling at those who once mocked them as "Chi Qu Chi Xia"; yet I fear they may be mocked in return.
My clan uncle Zhengkun contracted this disease in his prime. When subjected to beating, he was exempted from public corporal punishment (Xiang Zhang, Guo Zhang) and received it privately at home. At that time, I had just begun studying ophthalmology. Observing his obstruction near the white membrane, I felt it was loose rather than smooth. I removed Jiaosu (grains/papillae) from inside and outside his eyelids, applied Babao Kongqing Shi (Eight Treasures Azurite), Furong Jing, and Jiawei Cizhu Wan (Modified Magnetite Pill) day and night, while intermittently decocting Shenxiao Huangqi Tang (Miraculous Astragalus Decoction) and Quanzhen Yiqi Tang (Complete True Qi Decoction). Within four months, clarity was fully restored. He not only avoided further punishment but also walked in markets at night for over ten years before passing away. His son,某某, showed disrespect toward me. Whenever relatives asked how my uncle regained sight after long-term blindness, he replied: "It is destiny." Alas! Uncle Kun lived long and healthy; perhaps that is heaven's will, but can destiny reverse aging in the eyes?
Mr. Yang Yunchu from Xincheng, father and son both young Jinshi scholars. In correspondence, he addressed me as nephew, not brother. This was because I often served as a tutor in his household, maintaining good relations with his father and uncles. Humility and reverence are indeed the hallmark of scholars. Medicine is a humble profession; even with superior learning, one maintains bonds beyond status (Che-Li Alliance). Yet he strictly adhered to ancient etiquette between fathers' friends, treating the "destiny" explanation given by his son as insignificant as mountains and rivers.