This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Uveal tract, 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: It is a chronic non-granulomatous type of low grade anterior uveitis typically associated with early cataract formation. Shows moth- eaten appearance of iris, absence of posterior synechiae. Typically occurs unilaterally in middle aged persons. Treatment : topical steroids. Ref: khurana page no.168