总结赵忠印教授从燥湿同病出发，运用通行五道法辨治睑板腺功能障碍（MGD）性干眼症的临床经验。赵教授认为燥湿失衡是MGD性干眼症的重要病机，尤其强调痰湿在MGD性干眼症发病中的关键作用以及劳逸失度对于MGD性干眼症反复发作的重要影响。提出“通行五道，予痰湿以出路”的基本治法。主张以陈皮、木香、生姜等行水谷运化通道；以大黄、芒硝、火麻仁等行肠道排泄通道；以泽泻、车前子、猪苓等行泌尿排泄通道；以鱼腥草、荆芥、桂枝、细辛等调达鼻肺呼吸通道及玄府汗液通道。同时在临床施治中应注意节制劳逸，不忘滋阴以防过燥伤正。附验案1则。

This article summarizes Professor ZHAO Zhongyin's clinical experience in treating meibomian gland dysfunction(MGD)-associated dry eye syndrome based on the theory of coexistence of dryness and dampness,applying unblocking the five channels method. It holds that the imbalance between dryness and dampness is the key pathogenic mechanisms of MGD-associated dry eye syndrome. It particularly emphasizes the crucial role of phlegm-dampness in the onset of MGD-associated dry eye syndrome and the significant impact of improper work and rest on the recurrence of the disease. The basic treatment principle proposed is “unblocking the five channels and providing an outlet for phlegm-dampness”,advocating the use of Chenpi(Citri Reticulatae Pericarpium),Muxiang(Aucklandiae Radix),Shengjiang(Zingiberis Rhizoma Recens),etc. to regulate the channels of water and food digestion;the use of Dahuang(Rhei Radix Et Rhizoma),Mangxiao(Natrii Sulfas),and Huomaren(Cannabis Fructus) to regulate the intestinal excretion channel;the use of Zexie(Alismatis Rhizoma),Cheqianzi(Plantaginis Semen),and Zhuling(Polyporus),etc. to regulate the urinary excretion channel;and the use of Yuxingcao(Houttuyniae Herba),Jingjie(Schizonepetae Herba),Guizhi(Cinnamomi Ramulus),and Xixin(Asari Radix Et Rhizoma),etc. to regulate the respiratory channel of the nose and lungs and the sweat pores. At the same time,during clinical treatment,it is necessary to pay attention to regulating work and rest,and not to neglect nourishing yin to prevent excessive dryness from harming the body. One test case is attached.