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
Field defect seen in pituitary adenoma: 
Select and explain. 
A. Bitemporal hemianopia, B. Binasal hemianopia, C. Quadrantanopia, D. "Pie in sky" defect
A: Bitemporal hemianopia
Answer: A: Bitemporal hemianopia 
Explanation: A i.e. Bitemporal hemianopia Pituitary gland tumors, craniopharyngeoma & suprasellar aneurysms compress central chiasma and present with bitemporal hemianopia Q