The most classic form of glaucoma surgery, trabeculectomy, has been performed for more than 100 years. It has brought sight to countless glaucoma patients. But for more than 100 years, there has not been a more perfect alternative to trabeculectomy. the advent of the EXPRESS drainage staple implant has changed the perception of trabeculectomy. It offers more options for patients and doctors. The advantages of EXPRESS drainage nail implantation: 1. The surgical incision is precise and the damage is small; it has a very good protection for the visual function. 2, the surgical incision will not close, no tissue canton; 3, surgery does not remove the iris, intraocular damage is small; 4, two small holes involved in atrial drainage, double insurance; 5, no removal of trabeculae and iris, less damage; 6, good biocompatibility, significantly reduce the incidence of filtration tract scarring; 7, anterior chamber stability, anterior chamber inflammatory reaction is mild; 8, multiple implantation is possible. Mainly suitable for: open angle glaucoma, secondary glaucoma (deep anterior chamber), combined cataract glaucoma surgery, and failed previous glaucoma surgery.