Durysta is implanted in the eye to lower intraocular pressure. With glaucoma, higher levels of intraocular pressure lead to permanent damage of the optic nerve that is irreversible. If left untreated, glaucoma will cause vision loss and even permanent blindness. Durysta is meant to directly deliver and target tissues in the anterior chamber angle, where it can distribute bimatoprost under sustained release. The sustained release of bimatoprost for several months lowers intraocular pressure. Doctors believe that bimatoprost works to lower intraocular pressure because it increases the flow of the aqueous humor. This is through both the trabecular meshwork and the uveoscleral routes. The implant slowly breaks down in the eye after about 4-5 months.