True regarding amaurosis fugax are all except:: (A) Transient, recurrent episodes of visual loss, (B) Binocular lesion, (C) Embolus from carotid aery is commonest cause, (D) Ocular examination may be normal
Answer is B. 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