This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Deapth of anterior chamber in normal person is 
Select and explain. 
A. 1-2 mm, B. 3-4 mm, C. 0.5-0.9 mm, D. 2 -3 mm
D: 2 -3 mm
Answer: D: 2 -3 mm 
Explanation: Deapth of anterior chamber is 2.4 to 2 5 Refer khurana 6/e p 3