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
Corneal layer responsible for deturgescence – 
Select and explain. 
A. Bowman's membrane, B. Endothelium, C. Epithelium, D. Stromal
B: Endothelium
Answer: B: Endothelium 
Explanation: Endothelial pumps maintain stroma in a relatively deturgesced state (relative state of dehydration) which is responsible for maintenance of transparency.