The article explores the multifaceted nature of glaucoma which is characterised by progressive optic nerve damage and irreversible vision loss. Unlike earlier beliefs, glaucoma is not solely defined by intraocular pressure (IOP) but is influenced by various factors. Focusing on open angle glaucoma in the UK, this article delves into its diagnosis and management, addressing epidemiology, risk factors, primary care detection, and referral pathways across devolved nations. 

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