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
True about heterochromic uveitis: 
Select and explain. 
A. Involves posterior surface of iris, B. Involves anterior pa of iris, C. Involves posterior chamber, D. Posterior synechiae
B: Involves anterior pa of iris
Answer: B: Involves anterior pa of iris 
Explanation: Ans. Involves anterior pa of iris