Primary Open-Angle Glaucoma

Overview

Chronic progressive optic neuropathy with characteristic disc and field changes and open angles. IOP is the main modifiable risk factor, but a pressure reading above the statistically normal range is not required: normal-tension glaucoma is the normal-IOP subtype of this open-angle disease spectrum. Diagnosis rests on repeatable, concordant structural and functional damage after considering mimics and pressure context. RANZCO collaborative-care model: ophthalmologist establishes diagnosis and management plan; optometrist monitoring is acceptable when stable and under agreed protocol. Ophthalmologist-led care mandatory for unstable, advanced, or newly diagnosed cases.