Surgery can be done to create new channel for the fluid to come out of the eye. The aim of the surgery is to lower the eye pressure to preserve vision and not improve vision. The most common surgery done is called trabeculectomy where a new channel is created in the wall of the eye to allow fluid to flow out. Another surgery is called implantation of glaucoma drainage device where a silicone tube is inserted into the anterior chamber to drain fluid out onto a plate. If surgery is successful, you may not require eyedrops anymore or require less eyedrops. However you will still need to return for regular follow up.