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 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 ophthalmopegia
B: Loss of corneal blink reflex.
Answer: B: Loss of corneal blink reflex. 
Explanation: B i.e. Loss of corneal blink reflex