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
All of the following signs could result from infection within the right cavernous sinus, except: 
Select and explain. 
A. Loss of pupillary light reflex, B. Loss of corneal blink reflex, C. Ptosis, D. Right ophthalmoplegia
B: Loss of corneal blink reflex
Answer: B: Loss of corneal blink reflex 
Explanation: Ans. Loss of corneal blink reflex