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
Birdshot retinopathy is characterized by all except? 
Select and explain. 
A. Common in females, B. Unilateral, C. HLA-A29 positive, D. Creamy yellow spots
B: Unilateral
Answer: B: Unilateral 
Explanation: Ans. is 'b' i.e., Unilateral Bird-shot retinochoroidopathy It is a rare, idiopathic, bilaterally symmetrical chronic multifocal chorioretinitis characterised by numerous flat creamy-yellow spots due to focal chorioretinal hypopigmentation, resembling the pattern of "bird-sho scatter from a shotgun". The disease, more common in females than males, typically affects middle-aged healthy persons who are positive for HLA-A29. It runs a long chronic course of several years. Treatment with coicosteroids is usually not effective