The purpose of this study is to evaluate differences between treatments in mean change from baseline in 24-hr intraocular pressure (IOP) at Week 4.

Subjects will undergo washout of pre-study IOP-lowering medications for the appropriate duration, then undergo 2 eligibility visits. Eligible subjects will be randomized 1:1, to receive masked SIMBRINZA ® or Vehicle for 4 weeks. Two 24-hour visits will be conducted (Day 0 and Week 4) during which intraocular pressure will be collected every 2 hours. The expected duration of subject participation in the study is 10 weeks.

Inclusion Criteria:

• Diagnosis of either open-angle glaucoma or ocular hypertension;
• Able to attend all study related visits and be housed overnight at clinical site for the study assessments;
• Willing and able to sign an informed consent form;
• Other protocol-specified inclusion criteria may apply.

Exclusion Criteria:

• Women of childbearing potential who are pregnant, intend to become pregnant during the study, breast-feeding, or not using adequate birth control;
• Diagnosed with any form of glaucoma other than open angle glaucoma or ocular hypertension;
• Ocular surgeries or procedures excluded by the protocol;
• Diseases, illnesses, infections, or ocular abnormalities excluded by the protocol;
• Best-corrected visual acuity score less than 55 ETDRS letters (equivalent to approximately 20/80 Snellen) in either eye;
• Other protocol-specific exclusion criteria may apply.

Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations.

This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com.

This analysis population includes all subjects who received Investigational Product (IP) and completed at least 1 scheduled on-therapy study visit (Full Analysis Set).

Day 0 treatment through study completion, an average of 4 weeks

An AE was defined as any untoward medical occurrence in a subject who is administered a study treatment regardless of whether or not the event has a causal relationship with the treatment. AEs were obtained through solicited and spontaneous comments from subjects and through observations by the Investigator. Two subjects were administered both Investigational Products. For the Safety analysis, they are grouped under the first administered treatment. "As treated" analysis is reported.