论曰脏腑壅滞，肝经积热，上冲于目，令人目痛睛疼，若毒瓦斯结聚，甚则黑睛上，生黑
珠子如蟹目状，故以名之，或有如豆者，名曰损翳，或曰离睛，又曰蟹睛，病极难治，不可
钩割，及敷诸毒药，唯宜服宣泄之剂，使邪热退、即瘥。
治蟹目疼痛，泻肝补胆。防风汤方
防风（去叉一两半） 远志（去心） 黄芩（去黑心） 人参 桔梗（锉炒） 细辛（去
苗叶）
芍药（各一两）
上七味。粗捣筛，每服五钱匕，水一盏半，煎至八分，去滓食后临卧温服。
治眼生蟹目，黑睛疼痛。葳蕤犀角散方
葳蕤 犀角（镑） 蕤仁（汤浸去赤皮） 黄连（去须） 黄芩（去黑心） 栀子仁 甘
草（炙
锉） 升麻（各等分）
上八味。捣罗为散，每服三钱匕，水一盏，煎至六分，不去滓，食后临卧温服。
治蟹睛疼痛，泻肝。黄芩羊角汤方
黄芩（去黑心） 羚羊角（镑） 赤芍药 细辛（去苗叶） 桔梗（锉炒） 人参 远
志（去心）
甘草（炙锉各半两） 防风（去叉一两半）
上九味。粗捣筛，每服五钱匕，水一盏半，煎至八分，去滓食后温服、日再。
治目生蟹眼，黑睛疼痛。木通饮方
木通（锉） 羚羊角（镑） 旋复花 芦根 桑根白皮（锉各一两半） 黄连（去须） 赤
芍药
大黄（锉炒各一两） 甘草（炙锉半两）
上九味。粗捣筛，每服五钱匕，水一盏半，入竹叶七片切，煎至七分，去滓食后临卧温
服。
治眼中生蟹目，及 肉。杏仁龙脑膏方
杏仁（去皮尖双仁七粒） 龙脑（二钱研） 朴硝（炼成一钱） 猪胆（阴干用一枣
许）
上四味。先研杏仁如膏，次下三味，同研极细，以瓷合收，密复，勿见风，每用铜箸，
取点 中，泪出则瘥。
It is stated that: Stagnation of the Zang-Fu organs and accumulated heat in the Liver Meridian rush upward to the eyes, causing eye pain and eyeball tenderness. If toxic heat accumulates, severe cases may develop black nodules on the cornea (black pupil) resembling crab eyes, hence the name. Some appear like beans, termed "damaged nebula" (Sun Yi), or "detached from the eye" (Li Jing), also called "crab eye" (Xie Jing). This condition is extremely difficult to treat; it should not be treated with hooking or cutting methods, nor with applications of various toxic drugs. It is only suitable to administer purgative and dispersing agents to clear pathogenic heat, after which the disease will resolve.
For treating Crab Eye pain, draining the Liver and supplementing the Gallbladder. Fangfeng Decoction (Windproof Decoction):
Fangfeng (Saposhnikoviae Radix, forked parts removed, 1.5 liang), Yuanzhi (Polygalae Radix, heart removed), Huangqin (Scutellariae Radix, blackened parts removed), Renshen (Ginseng Radix et Rhizoma), Jiegeng (Platycodonis Radix, crushed and stir-fried), Xixin (Asari Radix et Rhizoma, seedlings and leaves removed), Shaoyao (Paeoniae Radix, each 1 liang).
The above seven herbs are coarsely pounded and sieved. Each dose consists of 5 qianbi, decocted in 1.5 sheng of water until reduced to 0.8 sheng. Strain the dregs and take warm after meals and before bedtime.
For treating Crab Eye formation with corneal pain. Weirui Xijiao Powder (Polygonatum and Rhinoceros Horn Powder):
Weirui (Polygonati Rhizoma), Xijiao (Rhinocerotis Cornu, shaved), Ruiren (Pruni Semen), Huanglian (Coptidis Rhizoma,须s removed), Huangqin (Scutellariae Radix, blackened parts removed), Zhizi Ren (Gardeniae Semen), Gancao (Licorice Root, roasted and crushed), Shengma ( Cimicifugae Rhizoma, equal parts).
The above eight herbs are pounded and sifted into a powder. Each dose consists of 3 qianbi, decocted in 1 sheng of water until reduced to 0.6 sheng. Do not strain; take warm after meals and before bedtime.
For treating Crab Eye pain, draining the Liver. Huangqin Yangjiao Tang (Scutellaria and Antelope Horn Decoction):
Huangqin (Scutellariae Radix, blackened parts removed), Lingyangjiao (Saigae Tataricae Cornu, shaved), Chishaoyao (Red Paeoniae Radix), Xixin (Asari Radix et Rhizoma, seedlings and leaves removed), Jiegeng (Platycodonis Radix, crushed and stir-fried), Renshen (Ginseng Radix et Rhizoma), Yuanzhi (Polygalae Radix, heart removed), Gancao (Licorice Root, roasted and crushed, each 0.5 liang), Fangfeng (Saposhnikoviae Radix, forked parts removed, 1.5 liang).
The above nine herbs are coarsely pounded and sieved. Each dose consists of 5 qianbi, decocted in 1.5 sheng of water until reduced to 0.8 sheng. Strain the dregs and take warm after meals, twice daily.
For treating Crab Eye formation with corneal pain. Mutong Yin (Akebia Decoction):
Mutong (Akebiae Caulis, crushed), Lingyangjiao (Saigae Tataricae Cornu, shaved), Xuanfuhua (Inulae Flos), Lugeng (Phragmitis Rhizoma), Sangbaipipi (Mori Cortex, crushed, each 1.5 liang), Huanglian (Coptidis Rhizoma,须s removed), Chishaoyao (Red Paeoniae Radix), Dahuang (Rhei Radix et Rhizoma, crushed and stir-fried, each 1 liang), Gancao (Licorice Root, roasted and crushed, 0.5 liang).
The above nine herbs are coarsously pounded and sieved. Each dose consists of 5 qianbi, decocted in 1.5 sheng of water with seven sliced leaves of Zhu Ye (Bambusae Folium) until reduced to 0.7 sheng. Strain the dregs and take warm after meals and before bedtime.
For treating Crab Eye formation and pterygium (fleshy growth) in the eye. Xingren Longnao Ointment (Apricot Kernel and Borneol Ointment):
Xingren (Armeniacae Semen Amarum, skin and pointed ends removed, double-kernelled, 7 grains), Longnao (Borneolum Syntheticum, 2 qian ground), Pianxiao (Natrii Sulfas, refined, 1 qian), Zhudan (Sus Scrofa Domesticum Bile, air-dried, amount equivalent to a jujube pit).
The above four ingredients: First grind the apricot kernels into a paste, then add the other three ingredients and grind together until extremely fine. Store in a porcelain container, tightly sealed, protected from wind. Use a copper stick to apply a small amount to the affected eye; recovery occurs upon tearing.