刘培 蒋鹏飞 周亚莎 陈立浩 胡艺 邓湖广 彭俊 彭清华

    〔摘要〕 外邪是指自然界中能引起疾病的邪气或致病因素超过了机体的适应能力，引起机体病理变化。中医学认为引起干眼的外邪主要为燥邪、热邪、风邪，此3种邪气伤及目窍，易造成眼表阴液亏损，根据其外邪属性可将其归为西医学所述干眼不良环境之中。如干燥环境或低湿度环境，以及眼表蒸发增强均可导致眼表干燥，与燥邪致病相似，可归属于燥邪;环境温度增高、紫外线、蓝光等可归属于热邪;空气流动性增加、空气污染等可归属于风邪。本文从中西医角度论述了外邪引起干眼的病机，以期为干眼的诊疗提供思路。

    〔关键词〕 干眼;外邪;燥邪;热邪;风邪;中医;病机

    〔中图分类号〕R276.7 ? ? ? 〔文献标志码〕A ? ? ? ?〔文章编号〕doi：10.3969/j.issn.1674-070X.2022.01.013

    〔Abstract〕 External pathogens means that the evil Qi or pathogenic factors in nature that can cause diseases exceed the body's adaptability and cause pathological changes in the body. Traditional Chinese medicine believes that the external pathogens that cause dry eyes are mainly dry evil， heat evil， and wind evil， these three evil spirits can hurt the eyes and easily cause the loss of eye surface Yin fluid. According to their attributes， they can be classified into the bad environment of dry eyes described in western medicine. For example， dry environment or low humidity environment， as well as the enhancement of ocular surface evaporation can lead to ocular surface dryness ......