In this episode, we hear about a clinical scenario where a case of idiopathic intracranial hypertension led to severe visual symptoms and bilateral optic disc swelling. Michelle Hanratty then recaps the key features of papilloedema, its presentation and causes with neuro-ophthalmologist Dr Denize Atan before looking at the differential diagnoses. The second part of the episode concentrates on the unilateral causes of optic disc swelling. Dr Atan discusses the features of optic neuropathies and how the symptoms and clinical findings are different to papilloedema. The episode concludes with advice to optometrists on the referral of these patients.

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