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
A veically oval dilated pupil is seen in 
Select and explain. 
A. Acute primary angle closure glaucoma, B. Wernicke's korsakoff psychosis, C. Neurosyphilis, D. Paralysis of oculomotor nerve
A: Acute primary angle closure glaucoma
Answer: A: Acute primary angle closure glaucoma 
Explanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 239 - 240)In acute primary angle closure glaucoma-Pupil is semi-dilated, veically oval and fixed. It is non-reactive to both light and accommodation There is a strong resemblance in the pupillary shape in cases with acute congestive glaucoma and cases dilated with sympathomimetics. The acute pain present in acute congestive glaucoma may trigger autonomic nervous system imbalance and sympathetic overactivity in these cases and may dilate the pupil veically oval.