Comparison of the Fixed Combinations of Brimonidine/Timolol and Dorzolamide/Timolol in Subjects With Open-Angle Glaucoma or Ocular Hypertension

Inclusion Criteria: * Male or female over 18 years * Female subjects of childbearing potential must have negative pregnancy test and practice contraception * Subjects must have confirmed diagnosis of primary open-angle glaucoma or ocular hypertension in both eyes * Subjects who are or have been insufficiently responsive to IOP reducing monotherapy and use of either study medication is deemed appropriate * Subjects able to complete questionnaires and provide informed consent Exclusion Criteria: * Female subjects who are pregnant, planning to become pregnant during study period, breast feeding or not practicing a reliable method of birth control * Subjects wherein the study drugs are contraindicated * Subjects who have had intraocular surgery with 6 months (3 months for laser) * Subjects with known side effects/allergy or sensitivity to any component of study treatments * Subjects with any uncontrolled systemic disease