When the eyes blur at 75 degrees of myopia, traditional Chinese medicine interprets this as a manifestation of "heart fire flaring" disrupting the body's yin-yang equilibrium. The heart, governing blood circulation and housing the spirit, becomes overstimulated—symptoms manifest as dry eyes, restless sleep, and a rapid pulse that feels like a drumbeat beneath the fingertips. Modern ophthalmology attributes this refractive error to eyeball elongation, yet both traditions converge on a critical insight: prolonged visual strain triggers systemic inflammation, elevating oxidative stress markers while destabilizing the autonomic nervous system's delicate balance between sympathetic and parasympathetic tones.

From a TCM perspective, excessive screen time generates "internal heat" that scorches the liver's yin essence, impairing its role in nourishing the eyes. This creates a vicious cycle where dry, fatigued eyes further strain the heart's energy reserves, evidenced by palpitations after prolonged focusing tasks. Western medicine confirms this through retinal imaging showing increased vascular permeability under chronic stress, while heart rate variability analysis reveals reduced parasympathetic dominance—a biomarker for impaired recovery capacity. The solution lies in dual modulation: cooling heart fire with herbs like chrysanthemum and lycium berries while practicing the 20-20-20 rule (every 20 minutes, gaze 20 feet away for 20 seconds) to reset ocular muscle tension. Nutritionally, omega-3-rich walnuts and deep-sea fish nourish the retina's photoreceptors while supporting cardiovascular endothelial function, creating a bridge between ancient "nourishing yin" principles and modern anti-inflammatory diets.