Synopsis

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

Pearl (Zhen Zhu) has a long history of use in Traditional Chinese Medicine (TCM) for various eye conditions, including conjunctivitis. In TCM, powdered pearl is believed to have calming, detoxifying, and vision-improving properties. Historical texts and materia medica describe its topical and oral use to "clear the liver" and "brighten the eyes," which encompasses a range of ocular complaints such as redness, swelling, and irritation—symptoms consistent with conjunctivitis.

However, while these traditional uses are well-documented, scientific evidence supporting the use of pearl for conjunctivitis is limited. A few in vitro and animal studies have examined the anti-inflammatory and antioxidant properties of pearl powder, suggesting a potential for reducing inflammation and promoting tissue repair. Nonetheless, there are no high-quality clinical trials or robust pharmacological studies directly investigating its efficacy or safety for treating conjunctivitis in humans.

In summary, the use of pearl to support or treat conjunctivitis is primarily justified by traditional use in TCM rather than by modern scientific validation. The available evidence is weak and largely anecdotal, so pearl should not be considered a first-line treatment for conjunctivitis according to current biomedical standards.

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