Objective: To observe the effect of Qingguangan slow-release agent on the related protein of TGF-β/Smad signal transduction pathway in the filtering scarring after glaucoma filtering surgery. To explore its mechanisms of Qingguangan slow release agent. Methods: Forty-eight rabbits were randomly divided into control group, model group, MMC group, Qingguanganan group component 1 to 4 group and the placebo group. In addition to the control group, trabeculectomy and irid root resection were performed in the other groups, and corresponding treatmen...