This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acquired Cataract, Subject name: Ophthalmology
Snow-flake cataract seen in 
Select and explain. 
A. Diabetes, B. Trauma, C. Chalcosis, D. Posterior subcapsular
A: Diabetes
Answer: A: Diabetes 
Explanation: Ans. is 'a' i.e Diabetes In diabetes.Senile cataractappears at an early age and progresses rapidlyTrue diabetic cataract:rare condition,usually occuring in young adults,bilateral known as Snow flake cataract or snow storm cataractOther imp types of cataractRosette shaped cataract*-TraumaSunflower cataract*-Chalcosis, Wilsons diseaseOil drop cataract*-GalactosemiaChristmas tree*-Myotonic dystrophicaBread crumb* posterior capsular-Complicated