凡目明能识见者，可治。昏不识人，或反目上视，或瞪目直视，或目睛正圆，
或戴眼，反折，或眼胞陷下者，皆不治也。凡开目而欲向明，欲见人，多言好动者，
阳证也。（阳盛，欲以动而散其热也。又有病热而恶日与火者，恶其助热也。）目闭恶明，不欲见人，懒
言恶动者，阴证也。（阴盛则阳衰，故恶动散。又有阳虚而喜见日光者，乐其助正也。）目
痛为阳明表证，
目赤为经络热盛。
目黄，头汗，欲发黄。白睛黄，欲发疸。目睛不了了，（不了了，犹不 ，火熏
而朦胧也。）为胃府实。睛不和，（黑白不分明也，似即俗所谓半胧眼。）为内热甚。目眩为痰火。眼
胞微肿，为有水。目下灰色，为寒饮。眼胞上下如烟煤者，寒痰。眼黑颊赤，为热
痰。眼黑，而行走艰难呻吟者，痰饮入骨也。眼黑，而面赤土色，四肢痿痹，屈伸
不便者，风痰也。
目 黄者，为病欲愈。
目痛，赤脉从上而下者，太阳病。（足太阳经，为目之上纲。）从下而上者，阳明病。（足
阳明经，为目之下纲。）从外 走内者，少阳病。（足少阳经，行锐 之后。）
瘰 发寒热，赤脉上下至瞳子，见一脉，一岁死；（邪锐而专也。）见一脉半，一岁半
死；见二脉，二岁死；二脉半，二岁半死；三脉，三岁死。（邪散而缓也。）
凡是眼睛明亮、能够看清事物的，属于可治之症。若眼神昏沉、不能识人，或者眼球向上翻视，或瞪眼直视不动，或眼球固定呈圆形，或眼球上吊（戴眼）、身体角弓反张，或眼睑凹陷的，都属于不治之症。
凡是睁着眼睛想要面向光亮处、想见人、多话且好动的，属于阳证。（这是因为阳气盛，机体试图通过活动来发散热量。但也有患热病却厌恶日光和火源的情况，这是厌恶它们助长体内的热邪。）
若是闭着眼睛厌恶光亮、不想见人、懒言少语且厌恶活动的，属于阴证。（这是因为阴气盛则阳气衰，所以厌恶活动以散失阳气。但也有阳气虚弱而喜欢见到日光的情况，这是乐于借助日光来辅助正气。）
眼睛疼痛属于阳明经表证，眼睛发红属于经络热盛。
眼睛发黄，头部出汗，是即将发生黄疸的前兆。白眼球发黄，也是即将发生黄疸。眼球视物模糊不清（“不了了”意为不清晰，如同被火熏烤后朦胧的样子），属于胃腑实证。眼球转动不灵活（黑白瞳仁界限不分明，类似于俗称的半朦胧眼），属于内热极盛。
眼睛眩晕属于痰火。眼睑轻微肿胀，说明体内有水湿停滞。眼下呈现灰色，说明有寒饮停聚。上下眼睑颜色像烟煤一样黑，说明有寒痰。眼眶发黑且脸颊发红，说明有热痰。眼眶发黑，且行走困难、呻吟不止，说明痰饮深入骨骼。眼眶发黑，且面色如土般赤黄，四肢痿软麻痹、屈伸不便，说明有风痰。
眼睛周围出现黄色晕圈，说明疾病即将痊愈。
眼睛疼痛，且红血丝从上往下走的，属于太阳病。（足太阳膀胱经，被称为目之上纲。）红血丝从下往上走的，属于阳明病。（足阳明胃经，被称为目之下纲。）红血丝从外侧向内侧走的，属于少阳病。（足少阳胆经，运行于锐眦之后。）
瘰疬（颈部淋巴结结核）发作寒热，且红血丝上下延伸至瞳孔，如果只见到一条脉络，预示一年后死亡；（因为邪气锐利且专一。）见到一条半脉络，预示一年半后死亡；见到两条脉络，预示两年后死亡；见到两条半脉络，预示两年半后死亡；见到三条脉络，预示三年后死亡。（因为邪气分散且缓慢。）
Whenever the eyes are bright and capable of clear vision, the condition is treatable. If the gaze is dull and unable to recognize people, or if the eyes roll upward, stare fixedly without blinking, remain round and fixed, exhibit "Dai Yan" (eyes staring upward with retracted eyeballs), present opisthotonos (arching of the back), or have sunken eyelids, these are all untreatable conditions.
If the patient keeps their eyes open, seeks brightness, desires to see people, speaks excessively, and is restless and active, this indicates a Yang syndrome. (This occurs because Yang Qi is exuberant, and the body attempts to dissipate heat through movement. However, in cases of febrile disease where the patient dislikes sunlight and fire, it is due to aversion to external factors that exacerbate internal heat.)
If the patient keeps their eyes closed, dislikes light, does not wish to see people, speaks little, and dislikes movement, this indicates a Yin syndrome. (When Yin is excessive, Yang becomes deficient, hence the aversion to movement which would further disperse Yang. Conversely, in cases of Yang deficiency where the patient prefers sunlight, it is because they welcome its assistance in supporting healthy Qi.)
Eye pain constitutes a Taiyang exterior syndrome of the Yangming channel. Redness of the eyes indicates excess heat in the meridians and collaterals.
Yellowing of the sclera accompanied by sweating on the head suggests impending jaundice. Yellowing of the white part of the eye also indicates impending jaundice. Blurred vision ("Bu Liao Liao," meaning unclear, akin to being hazy after exposure to smoke) indicates Excess Syndrome of the Stomach Fu-organ. Lack of coordination in eye movements (indistinct boundaries between the black and white parts of the eye, similar to the colloquial term for partial blindness) indicates severe internal heat.
Vertigo of the eyes is caused by Phlegm-Fire. Slight swelling of the eyelids indicates the presence of fluid retention. A grayish hue under the eyes indicates Cold-Fluid retention. Eyelids appearing sooty black indicate Cold-Phlegm. Black orbits with red cheeks indicate Hot-Phlegm. Black orbits accompanied by difficulty walking and groaning indicate Phlegm-Fluid penetrating into the bones. Black orbits with a sallow-red complexion like earth, flaccid paralysis of the four limbs, and difficulty bending or extending them indicate Wind-Phlegm.
A yellowish halo around the eyes indicates that the disease is about to resolve.
Eye pain with red vessels running from top to bottom indicates a Taiyang disease. (The Foot-Taiyang Bladder Meridian is referred to as the "Upper Net" of the eyes.) Red vessels running from bottom to top indicate a Yangming disease. (The Foot-Yangming Stomach Meridian is referred to as the "Lower Net" of the eyes.) Red vessels running from the outside toward the inside indicate a Shaoyang disease. (The Foot-Shaoyang Gallbladder Meridian runs behind the lateral canthus.)
In Scrofula (Luo Li, lymphatic tuberculosis) presenting with alternating chills and fever, if red vessels extend vertically to the pupil: seeing one vessel predicts death in one year; (because the pathogenic factor is sharp and concentrated.) seeing one and a half vessels predicts death in one and a half years; seeing two vessels predicts death in two years; seeing two and a half vessels predicts death in two and a half years; seeing three vessels predicts death in three years. (Because the pathogenic factor is dispersed and slow-moving.)