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
The investigations of anterior uveitis fora 25 years old boy are all except: 
Select and explain. 
A. HLA-B27, B. X-ray sacroiliac joint, C. TORCH agent test, D. USG abdomen
D: USG abdomen
Answer: D: USG abdomen 
Explanation: Ans. USG abdomen