Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Aerva lanata, commonly known as mountain knotgrass, has a longstanding place in traditional medicine systems, particularly in Ayurveda and folk medicine across South Asia. In these traditions, the plant has been used for a variety of ailments, including as a topical application for eye conditions such as conjunctivitis and general eye irritation. The leaves and flowers are sometimes made into poultices or decoctions for this purpose. However, scientific validation specifically supporting its use for eye infections is minimal to nonexistent. While Aerva lanata does contain phytochemicals with potential antimicrobial and anti-inflammatory properties—such as flavonoids and alkaloids—there are no robust clinical studies or pharmacological investigations directly evaluating its efficacy or safety for ocular infections in humans. Most available literature focuses on its use for urinary and kidney conditions. Thus, while the traditional use of Aerva lanata for eye infections is documented, the evidence supporting its efficacy for this application remains very weak, with a rating of 1 due to the lack of modern scientific studies corroborating its benefit or safety for eye health.

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