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What is True regarding amaurosis fugax are all except: and explain in detail?
Amaurosis fugax Sudden, temporary and painless monocular visual loss occurring due to a transient failure of retinal circulation. Uniocular lesion Lasts for 2-5 minutes and resolves in the reverse pattern of progression, leaving no residual deficit. Fundus : May be normal or shows retinal ischemia-Retinal oedema and small superficialhaemorrhages Causes : Carotid transient ischaemic attacks (TIA) Embolization of retinal circulation Papilloedema Giant cell aeritis Raynaud's disease Migraine Hypeensive retinopathy Venous stasis retinopathy