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
Rosette shaped cataract is seen in: 
Select and explain. 
A. Trauma, B. Radiation, C. DM, D. Iridocyclitis
A: Trauma
Answer: A: Trauma 
Explanation: A i.e. Trauma Blunt trauma (concussion or contusion) to eye 1/t formation of vossius ringQ on anterior surfaceQ of lens and rosette shaped cataractQ usually in the posterior coex. Penetrating trauma (with retention of copper or copper alloy like brass) 1/t golden brown ring (cu deposited in peripheral pas of descemet's membrane layer of cornea) resembling Kayser-Fleischer ring of wilsons diseaseQ and Sunflower cataractQ