Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Pearl (also known as "Zhen Zhu" in Traditional Chinese Medicine, TCM) has a long historical use as a remedy for various eye problems, including redness, irritation, and blurred vision. Its use is primarily based on traditional knowledge, with records dating back centuries in Chinese medical texts. In TCM, pearl powder is believed to "nourish the yin," "clear the liver," and "improve vision." It is commonly included in herbal formulas or applied topically for ailments like conjunctivitis and eye fatigue. The rationale in TCM relates to the idea that the liver "opens to the eyes," and pearl is said to calm the liver and benefit eyesight. There is limited modern scientific validation for these claims. Some laboratory studies suggest that pearl powder contains calcium, amino acids, and trace minerals, which may have antioxidant or anti-inflammatory properties. However, there is a lack of robust clinical trials demonstrating clear benefits of pearl for eye diseases or vision improvement in humans. The evidence in the biomedical literature is sparse and largely preclinical. Therefore, while the use of pearl for eye problems is well-established in tradition, it is not substantiated by strong modern scientific evidence.

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