What Causes Yellowing of the Eyes?
Nov 28, 2021
Source: Cainiu Health
Dr. Cui Xin
Introduction
1. Physiological factors: Frequent late-night activity or high-intensity work may lead to excessive eye strain, resulting in yellowing of the eyes.
2. Dietary factors: Excessive consumption of foods rich in natural yellow pigments—such as carrots, citrus fruits, and pumpkins—can cause yellow discoloration of the eyes.
3. Pathological factors: Hepatobiliary diseases (e.g., acute icteric hepatitis) may impair bilirubin metabolism, leading to jaundice and consequent yellowing of the sclera.
Yellowing of the eyes is a common phenomenon; numerous factors can cause it—some pathological, others non-pathological. Non-pathological causes include age-related changes (particularly in older adults) and exposure to ultraviolet (UV) light or other environmental agents. Pathological causes include jaundice and other underlying medical conditions. So, what exactly causes yellowing of the eyes? Below, we address this question.
What Causes Yellowing of the Eyes?
1. Physiological Factors
Frequent熬夜 (sleep deprivation), high-intensity work, or excessive eye strain may lead to yellowish discoloration of the eyes. In such cases, using lubricating or anti-fatigue eye drops is recommended, along with adequate rest. Daily gentle eye massage and warm compresses can also help improve local blood circulation and effectively alleviate symptoms. Additionally, prolonged exposure to UV radiation or airborne dust particles may induce pigment deposition, resulting in localized yellowish patches.
2. Dietary Factors
Consuming large quantities of foods rich in natural yellow pigments—such as carrots, citrus fruits, and pumpkins—may overwhelm the liver’s capacity to metabolize beta-carotene fully. This leads to elevated serum carotene levels, causing carotenemia—a condition characterized by yellowish discoloration of the skin and mucous membranes, including the conjunctiva, thereby contributing to yellowing of the eyes. Conversely, malnutrition or vitamin deficiencies (especially vitamins A, B12, and E) may impair bilirubin metabolism, resulting in hyperbilirubinemia and subsequent yellowing of the sclera and conjunctiva.
3. Pathological Factors
Hepatobiliary disorders—including acute viral hepatitis—can trigger jaundice, manifesting as yellowing of the eyes. This type of yellowing stems primarily from hepatic dysfunction leading to accumulation of unconjugated or conjugated bilirubin, which deposits in the skin and sclera. Unlike mild, benign yellowish tints sometimes observed in healthy individuals, this form represents true pathological jaundice. Moreover, the conjunctival membranes contain abundant mucosal tissue highly susceptible to bilirubin binding, further contributing to visible ocular yellowing.
The above outlines the primary causes of yellowing of the eyes. We hope this information proves helpful.
