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
In chronic simple glaucoma the most common field defect is: 
Select and explain. 
A. Arcuate field defect, B. Baring of blind spot, C. Bjerrum scotoma, D. Siedel's sign
B: Baring of blind spot
Answer: B: Baring of blind spot 
Explanation: Ans. Baring of blind spot