This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': "Acute congestive glaucoma \nSelect and explain. \nA. Pin point pupil, B. Vertically oval mild dilated pupil, C. Hutchinson's pupil, D. Argyll-Robertson pupil", 'role': 'user'}, {'content': 'Answer: B \nExplanation: i.e. (Vertically oval, mild dilated pupil): (229-Khurana 4th)* Pupil is semi dilated, vertically oval and fixed. It is non reactive to both light and accommodation - seen in Acute congastive glaucomaClinical features of Acute congestive glaucomaSymptoms* Pain - sudden onset of very severe pain, radiates along the branches of 5th nerve* Nausea, vomiting and prostrations* Rapidly progressive impairment of vision, redness, photophobia, and lacrimation* Past histoiy - intermittent subacute attackSigns* Lids - oedematous* Conjunctiva - chemosed and congested* Cornea - oedematous and insensitive* Anglo of AC-is completely closed* Iris may be discoloured* IOP is markedly elevated (between 40 and 70 mm Hg)* Optic disc is oedematous and hyperaemic* Fellow eye shows shallow anterior chamber and a narrow angle (latent angle closure glaucoma)', 'role': 'assistant'}]