The purpose of this study was to evaluate the safety and efficacy of adding AZARGA® as a single agent to prostaglandin monotherapy in patients with either ocular hypertension or primary open-angle glaucoma.

This study consisted of 3 study visits (Screening/Baseline, Week 4, and Week 12). Eligible patients self-administered the study medication (AZARGA® Eye Drops), adjunct to their current prostaglandin monotherapy for 3 months.

Inclusion Criteria:

• Clinical diagnosis of ocular hypertension, primary open angle (including pigment dispersion) glaucoma in both eyes.
• IOP considered to be safe, in both eyes, in such a way that should assure clinical stability of vision and the optic nerve throughout the study period.
• Treated with, and in the Investigator's judgment demonstrated an inadequate response to, prostaglandin monotherapy for a minimum of 4 weeks at Visit 1. Last dose of prostaglandin instilled correctly to put patient within the dosing cycle at Visit 1.
• At Visit 1, have an IOP of ≥ 20 mmHg in at least one eye and ≤ 35 mmHg in both eyes treated with prostaglandin monotherapy.
• Best corrected visual acuity of 1.0 LogMAR or better in each eye.
• In any eye not qualifying as a study eye, IOP should be able to be controlled on no pharmacologic therapy or on prostaglandin monotherapy alone.
• Willing to sign an informed consent form.
• Able to follow instructions and willing and able to attend required study visits.
• Other protocol-defined inclusion criteria may apply.

Exclusion Criteria:

• Known medical history of allergy, hypersensitivity or poor tolerance to any component of AZARGA® that is deemed clinically significant in the opinion of the investigator.
• A history of, or at risk for uveitis or cystoid macular edema (CME).
• History of ocular herpes simplex.
• Corneal dystrophies in either eye.
• Concurrent infectious/non infectious conjunctivitis, keratitis or uveitis in either eye (excluding Blepharitis or non-clinically significant conjunctival hyperemia).
• Intraocular conventional surgery or laser surgery in study eye(s) less than 3 months prior to Visit 1.
• Risk of visual field or visual acuity worsening as a consequence of participation in the study, in the investigator's best judgment.
• Progressive retinal or optic nerve disease from any cause apart from glaucoma.
• Use of systemic medications known to affect IOP (e.g. oral beta-adrenergic blockers, alpha-agonists and blockers, angiotensin converting enzyme inhibitors and calcium channel blockers), which have not been on a stable course for 7 days prior to Visit 1 or an anticipated change in the dosage during the course of the study.
• Use of corticosteroids (oral, topical ocular or nasal) within 30 days of Visit 1 and during the course of the study.
• Bronchial asthma or a history of bronchial asthma, bronchial hyper reactivity, or severe chronic obstructive pulmonary disease that would preclude the safe administration of a topical beta-blocker.
• History of severe allergic rhinitis.
• A condition, which in the opinion of the principal investigator, would interfere with optimal participation in the study, or which would present a special risk to the subject.
• Use of any systemic carbonic anhydrase inhibitors (CAI) (e.g. methazolamide [Neptazane], acetazolamide [Diamox]).
• Severely impared renal function.
• History of an allergy to sulphonamides.
• Bronchial asthma or a history of bronchial asthma, bronchial hyper reactivity, severe allergic rhinitis or severe chronic obstructive pulmonary disease that would preclude the safe administration of a topical beta-blocker.
• Pregnant, lactating, or of childbearing potential and not using a reliable method of birth control.
• Any clinically significant, serious, or severe medical condition.
• Participation in any other investigational study within 30 days prior to the screening/baseline visit.
• Other protocol-defined exclusion criteria may apply.

This analysis population includes all enrolled participants.

Adverse events (AEs) were collected for the duration of the study (2 years, 1 month). This analysis group includes all patients who received study medication.

An AE was defined as any untoward medical occurrence in a patient who is administered a study treatment, regardless of causal relationship with the treatment. Reports of AEs were obtained through solicited and spontaneous comments from the patients and through observations by the Investigator as outlined in the study protocol.

A single-arm, non-randomized study somewhat limits interpretation of efficacy results. A 3-month duration does not allow for long-term safety conclusions; however, data obtained at V2 and V3 did not vary much, indicating a steady state at Month 1.