Chrysanthemum flowers, commonly referred to as "Mum" (Chrysanthemum morifolium or Chrysanthemum indicum), have a long history of use in traditional Chinese medicine (TCM) for supporting eye health. In TCM, chrysanthemum tea is often prescribed to "clear the liver" and "brighten the eyes," and it is believed to relieve symptoms such as red, dry, or itchy eyes, particularly when associated with heat or wind-heat syndromes. This use is documented in classical Chinese medical texts and remains common in modern herbal practice in East Asia.

The scientific evidence supporting the use of chrysanthemum for eye health is limited. Some laboratory and animal studies indicate that chrysanthemum extracts possess anti-inflammatory and antioxidant properties, which could theoretically benefit eye health, particularly in conditions associated with oxidative stress or inflammation. However, clinical trials in humans specifically assessing its effectiveness for supporting the eyes are lacking. Thus, its use for this system is primarily justified by traditional rather than scientific evidence.

In summary, while chrysanthemum (Mum) is widely used in traditional herbal medicine for eye support, and some preclinical studies suggest potential mechanisms, robust human data are absent. Therefore, the evidence rating for this use is moderate based on tradition but low based on scientific validation.