A Study Evaluating the Latanoprost Punctal Plug Delivery System (L-PPDS) in Subjects With Ocular Hypertension or Open-Angle Glaucoma

Inclusion Criteria: * Diagnosed with bilateral OH or OAG and on topical prostaglandin monotherapy bilaterally as standard of care for treatment of OH or OAG. * Adequate IOP control on topical prostaglandin monotherapy during the past 1 month. Exclusion Criteria: * Functionally significant vision loss, or progressive field loss within the last year. * Contact lens wear at any time during the treatment period. * Keratoconjunctivitis sicca requiring chronic topical artificial tears, lubricants, and/or Restasis®. * Active lid disease (i.e., moderate or severe blepharitis, meibomianitis) that requires medical treatment. * Subjects with ≥0.9 vertical cup or completely notched optic nerve head rim. * Currently on chronic ocular topical medications * Currently on any ophthalmic or systemic steroid therapy. * Laser surgery for glaucoma within the last 3 months or 6 months for incisional surgeries. * History of macular edema * History of chronic/recurrent inflammatory eye disease. * History of a non-response to topical prostaglandin therapy. * Subjects who have epiphora.