Inclusion Criteria:  Able to understand and execute written informed consent Males or female subjects at least 22 years of age. Subjects qualifying for cataract surgery Subjects diagnosed with mild to moderate open-angle glaucoma in at least one eye currently treated with 1-3 topical IOP-lowering medications Subjects with diagnosis of open-angle glaucoma in at least one eye with an unmedicated IOP of 21-36 mmHg  Exclusion Criteria:  Women of child-bearing potential Modified Shaffer angle grade < 2 Patients with severe or advanced glaucoma Intraocular surgery within the last 6 months or laser surgery within the last 3 months BCVA worse than 20/80 in either eye Patients with a previous peripheral iridotomy. Ocular infection or inflammation within the last 6 months. Any medication that would be contraindicated for a glaucoma surgical procedure.