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 result in loss of corneal sensations except: 
Select and explain. 
A. Acute congestive glaucoma, B. Dendritic ulcer, C. Absolute glaucoma, D. Exposure keratitis
D: Exposure keratitis
Answer: D: Exposure keratitis 
Explanation: Ans. Exposure keratitis