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
Pituitary gland enlargement causes 
Select and explain. 
A. Bitemporal hemianopia, B. Binasal hemianopia, C. Homonymous hemianopia, D. All the above
A: Bitemporal hemianopia
Answer: A: Bitemporal hemianopia 
Explanation: Pituitary gland enlargement affects optic chiasma leading to Bitemporal hemianopia.