A method of decreasing intraocular pressure (IOP) in an eye of a patient in need thereof includes implanting a first lacrimal implant through an upper punctum and into an upper lacrimal canaliculus of the eye of the patient. The method may further comprise implanting a second lacrimal implant through a lower punctum and into a lower lacrimal canaliculus of the eye of the patient, and releasing, on a sustained basis a therapeutically effective amount of an intraocular pressure -reducing therapeutic agent.