2. Diagnosis of open angle glaucoma (OAG) or ocular hypertension (OHT). Unmedicated (post-washout, if required) IOP >= 24 mm Hg in one or both eyes at 08:00 hours, >= 21 mm Hg at 10:00, 12:00 and 16:00 hours on post-washout measurement (Visit 1).