RESUMEN
The theory of “rhythmic equilibrium” is developed based on the idea of sharing the same laws between nature and human, and by integrating with the medical concept of homeostasis of calm yin and sound yang. "Rhythmic instability" runs through the entire process of the occurrence and development of myopia, covering four aspects including imbalance of rhythm (high-risk period of myopia), imbalance of qi and blood (premyopia), imbalance of sinew-membranes (low myopia), and imbalance of essence and blood (high myopia). The treatment should focus on adjusting the rhythm and harmonizing situation, which can help balance yin and yang, and nourish the eye system. For high-risk period of myopia, adjusting sleeping time and increasing outdoor activities are stressed to adjust the rhythm in a timely manner. In the stage of premyopia, appropriate techniques of traditional Chinese medicine (TCM) such as pressing needles can be added to harmonize qi and blood. In the period of low myopia, appropriate TCM techniques such as pressing needles and ear acupuncture are mainly used, supplemented by modified Danggui Buxue Decoction (当归补血汤) to soften tendons and unblock collaterals. During the period of high myopia, it is recommended to control the development of existing disease and put focus on nourishing essence and blood, usually with Zhujing Pill (驻景丸) or modified Siwu Wuzi Decoction (四物五子汤) to restore the stability of the eyes and the whole body.