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 Birdshot Chorioretinopathy? 
Select and explain. 
A. Unilateral, B. Bilateral, C. Acute onset, D. Most commonly seen in males
B: Bilateral
Answer: B: Bilateral 
Explanation: Ans. (b) BilateralRef: Kanski, 7/e, p. 467; Khurana 6/e, p. 170Birdshot chorioretinopathy is an uncommon idiopathic chronic/recurrent bilateral disease which predominantly affects females. Over 95% patients are positive for HLA A29. The disease involves both the retina and choroid independently.