开窍之后，即用熏洗汤者，何也？
夫人五脏六腑、十二经络、三百六十脉络，其精
气皆上注于目而为明。今内外之邪气郁结既久，自然
头目中清阳之窍为邪气所乘矣。必用熏洗之药，将轮
廓中之积滞，使其活动；经络中之结热，使其通利。
盖瞳神中有大络五，心、肝、脾、肺、肾是也，久病
则五络皆病矣；有中络六，膀胱、大小肠、三焦、胆、
包络是也，久病则六络中皆病矣。必须熏洗以开毛
窍，令经络中邪气外散，正气好复。
内、外之窍既开，宜用参、 、熟地等药，以滋
补之。今不用此，而用杞实粥者，何也？
夫人一身气血之精粹者，上注于目而为明。老者
气血两虚，精粹者不能上升于目。食杞实粥以养胃
气，胃乃五脏六腑之源，开发神机之本；欲养精血，
先调胃气，胃气一壮，自然生气生血；气血既足，则
气血之精粹者，自然上升于目，而光明生焉。
用杞实粥以养精血矣，又用猪肝脯者，何也？
肝为肾之子，补肾之药，由肝而入，肝开窍于目
也。肝血以养胆汁，胆汁以滋神膏，神膏涵养瞳神，
神水滋润神膏。肝、胆、神膏、肾水，俱以肝血为主，
故《内经》云目得血而能视也。至于精生气、气生神、
神生明、明能视物，指肝、胆、神膏、肾水、真血、
真气、真精而言，不是独言肾水，可见肝为瞳神之
本，肾乃精光之源也。
After the orifices are opened, why is the fumigation and washing decoction (Xunxi Tang) used immediately?
The essence and qi of the five zang organs, six fu organs, twelve meridians, and three hundred and sixty collaterals all ascend to the eyes to provide clear vision. Now, since internal and external pathogenic factors have been stagnant and knotted for a long time, the clear yang orifices of the head and eyes naturally become invaded by these pathogenic factors. It is necessary to use fumigation and washing herbs to mobilize the accumulation and stagnation within the contours of the eye; and to promote the free flow of heat knotting within the meridians. There are five major collaterals in the pupil (Tongshen), corresponding to the Heart, Liver, Spleen, Lung, and Kidney; in chronic illness, all five collaterals become diseased. There are also six medium collaterals, corresponding to the Bladder, Large Intestine, Small Intestine, Sanjiao (Triple Burner), Gallbladder, and Pericardium; in chronic illness, all six collaterals become diseased. Fumigation and washing are required to open the hair follicles and eye orifices, allowing pathogenic factors in the meridians to dissipate outward, so that healthy qi can recover.
Since the internal and external orifices are now open, it would be appropriate to use herbs such as Renshen (Ginseng Radix et Rhizoma), [text missing], and Shudi (Prepared Rehmanniae Radix) to nourish and tonify. Why, then, is this not done, but instead, Qishi Zhou (Goji Berry Porridge) is used?
The most refined essence of the body's qi and blood ascends to the eyes to provide clear vision. In the elderly, both qi and blood are deficient, and the refined essence cannot ascend to the eyes. Consuming Qishi Zhou (Goji Berry Porridge) nourishes Stomach Qi. The Stomach is the source of the five zang and six fu organs and the foundation for developing Shen Ji (spiritual mechanism/vitality). To nourish Jing and Blood, one must first regulate Stomach Qi. Once Stomach Qi is strong, it naturally generates Qi and Blood. When Qi and Blood are sufficient, the refined essence of Qi and Blood naturally ascends to the eyes, resulting in clear vision.
Having used Qishi Zhou (Goji Berry Porridge) to nourish Jing and Blood, why is Zhugan Fu (Pork Liver Preserved Meat) also used?
The Liver is the "son" of the Kidney. Herbs that tonify the Kidney act through the Liver, because the Liver opens into the eyes. Liver Blood nourishes Gallbladder Juice, which in turn nourishes Shengao (the vitreous humor-like substance). Shengao nurtures the Pupil (Tongshen), and Shenshui (ocular fluid) moistens Shengao. The Liver, Gallbladder, Shengao, and Kidney Water are all primarily governed by Liver Blood. Therefore, the *Neijing* states that the eyes can see when they receive Blood. As for Jing generating Qi, Qi generating Shen, Shen generating Ming (clarity), and Ming enabling vision, these terms refer to the Liver, Gallbladder, Shengao, Kidney Water, True Blood, True Qi, and True Jing, not solely to Kidney Water. This demonstrates that the Liver is the root of the Pupil, while the Kidney is the source of Jing and Light.