All-Nighters and Chronic Overtime: Your Eyes Are Under Severe Strain

The perspective of the Donguibogam aligns closely with modern clinical understanding. The process by which chronic late nights and long hours impair eye health can be clearly explained through physiological mechanisms. Dark shadows beneath the eyes, commonly referred to as dark circles, correspond clinically to periorbital hyperpigmentation or vascular show-through. Sustained sleep deprivation causes microvessels under the thin skin around the eyes to dilate. When blood flow stagnates, it appears bluish or dark red through the eyelid skin, which is the thinnest on the body. Working late also elevates cortisol, a stress hormone that promotes inflammatory responses and increases vascular permeability, further accentuating discoloration. Morning eye swelling follows a related mechanism. Staying awake overnight disrupts autonomic nervous system balance, impairing lymph circulation and encouraging fluid retention in periorbital tissues. Consuming late-night meals or excess sodium further strains the kidney's ability to regulate water excretion, aggravating puffiness. Modern medicine attributes this edema to fluid retention and lymphatic circulation disorder, mirroring the concept of kidney fluid metabolism hypofunction described in classical medicine. Eye fatigue and worsening dry eye syndrome represent hallmark features of digital eye strain. Gazing at digital displays for extended periods sharply lowers the blink rate, dropping from a normal 15 to 20 blinks per minute to fewer than 5. Without adequate tear distribution, the ocular surface dries out and becomes irritated. Furthermore, exposure to artificial blue light can stress retinal cells and suppress melatonin secretion, degrading sleep quality. Poor sleep compounds ocular fatigue, sustaining a harmful cycle. The classical view that the liver stores blood and governs the eyes parallels modern insights into hepatic nutrient metabolism and toxin clearance, both of which are vital for healthy blood circulation. Decreased liver function compromises systemic circulation and nutrient delivery, directly affecting the dense microvascular beds of the eyes. Similarly, kidney essence corresponds functionally to the role of the adrenal gland. The adrenal gland secretes hormones that govern the stress response and regulates overall energy metabolism. Chronic overwork exhausts adrenal capacity, leading to systemic hypofunction that compromises ocular health. The eyes remain a clear clinical indicator of broader systemic well-being. Persistent eye fatigue often indicates a need to address overall physical strain rather than treating the eyes in isolation.