<prompt> A hypeensive patient was brought to the casualty complaining that he lost his vision suddenly at morning. He didnt have any pain. Sudden painless loss of vision is seen in all of the following conditions, EXCEPT:PapilloedemaAmblyopiaVitreous haemorrhageCRVO  <response>: Causes of sudden painless loss of vision: Central aery occlusion Retinal vein thrombosis Vitreous hemorrhage in front of macula Macular hemorrhage Retinal detachment Central serous retinopathy Acute ischemic optic neuropathy Coical blindness Malingering Ref: Riordan-Eva P. 2011. Chapter 3. Ophthalmic Emergencies. In P. Riordan-Eva, E.T. Cunningham, Jr. Eds, Vaughan Asburys General Ophthalmology, 18e. 