The use of the Orchid tree (commonly referring to species in the Bauhinia genus, such as Bauhinia variegata or Bauhinia purpurea) for treating eye infections is primarily rooted in traditional medicine systems, especially in South Asia. In Ayurveda and some folk medicinal practices, extracts or decoctions from the leaves, bark, or flowers of the Orchid tree have been used topically for various eye ailments, including infections and inflammation. However, these uses are based on ethnobotanical reports and traditional knowledge rather than on rigorous scientific validation.

The scientific literature provides minimal direct evidence supporting the efficacy of Bauhinia species specifically for eye infections. While some studies have documented the antimicrobial and anti-inflammatory properties of certain Bauhinia extracts, these studies are typically in vitro or in animal models and do not specifically address ocular pathogens or clinical outcomes in eye infections. There is a lack of controlled clinical trials or robust pharmacological studies demonstrating the safety and efficacy of Orchid tree preparations for this indication.

In summary, the use of Orchid tree for eye infections is justified primarily by tradition, with little scientific evidence to support its effectiveness. The evidence rating reflects the absence of direct scientific validation for this particular use.