Knowledge Check

The central retinal artery enters the optic disc and divides into four tributaries

The central retinal vein leaves the substance of the optic nerve to drain into the cavernous sinus of the superior optic vein

The vitreous humour is anchored to the globe by three main attachments

Around 50% patients with CRAO will have general atheromatous disease

Rhegmatogenous retinal detachment describes the leak of vitreous fluid through a break in the retinal pigment epithelium and its collection in the subretinal space

Myopia can predispose to atraumatic retinal breaks

Optic neuritis is predominately an autoimmune condition producing demyelination of the oculomotor nerve

Ischaemic optic neuropathy is most commonly caused by small vessel vasculitis

Sudden Visual Loss

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