Synopsis

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

Oriental arborvitae (Platycladus orientalis, also known as Thuja orientalis) has a long history of use in traditional Chinese medicine and some other East Asian traditional systems. It is primarily employed for its purported effects on calming the spirit, stopping bleeding, and promoting hair growth. Regarding eye infections, there are historical records and folk practices where preparations from oriental arborvitae leaves or seeds have been used as herbal remedies for various ocular conditions, including conjunctivitis and eye irritation. These uses stem from the plant’s general reputation for anti-inflammatory and antimicrobial properties in traditional medicine.

However, the scientific evidence supporting its effectiveness for treating eye infections is very limited. A few laboratory studies have identified some antibacterial and antifungal constituents in extracts of Platycladus orientalis, but these studies are not specific to eye pathogens, nor have they translated into clinical trials or ophthalmological research. No high-quality clinical studies directly demonstrate safety or efficacy for eye infections. As a result, while there is a traditional basis for its use in this context, the evidence is weak and largely anecdotal, warranting a low evidence rating.

Anyone considering herbal treatments for eye infections should exercise caution and consult a healthcare provider, as inappropriate use of plant extracts in the eye can lead to irritation or worsen infections.

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