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: Concussion cataract occurs mainly due to inhibition of aqueous and partly due to direct mechanical effects of the injury on lens fibres. Following types of cataract occurs :- i) Discrete subepithelial opacities; ii) Early rosette cataract (punctate); iii) Late rosette cataract; iv) Zonular cataract; v) Diffusion cataract; vi) Early maturation of senile cataract.