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
Onion ring Appearance is seen in 
Select and explain. 
A. Lamellar Cataract, B. Capuliform, C. Myotonic dystrophy, D. Posterior polar Cataract
D: Posterior polar Cataract
Answer: D: Posterior polar Cataract 
Explanation: Onion ring/whorled Appearance  seen in Posterior polar Cataract.