This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Significant loss of vision in a patient with hypeension can occur due to all of the following, except: 
Select and explain. 
A. Occipital infarct, B. Anterior ischemic optic neuropathy, C. Papilloedema, D. Retinal hemorrhage
C: Papilloedema
Answer: C: Papilloedema 
Explanation: C i.e. Papilloedema In papilloedema visual acuity & pupillary reactions remain normal (almost) until optic atrophy sets in. Q It presents with painless & gradually progressive loss of vision Q with enlargement of blind-spot & progressive contraction of visual field. In papilloedema the visual loss is in significant. In papilloedema there is painless gradually progressive loss of vision which is usually bilateralQ which occurs after a long time only when optic atrophy sets in. Lesions of the calcarine coex (a pa of occipital lobe) usually produces a macular sparing congruous homonymous hemianopia, whereas injuries to the tip of the occipital coex produces the same without macular sparing. B/L occipital coex lesion 1/t coica blindness. Clinical entity in spontaneous Anterior Ishchemic Optic Neuropathy (AION) comprises of sudden loss of vision. Retinal haemorrhage can of course lead to quite significant loss of vision.