This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
Cataract is cases of diabetes mellitus is due to accumulation of - 
Select and explain. 
A. Glycated crytallins, B. Calcified crystallins, C. Glycated fibrillins, D. Calcified fibrillins
A: Glycated crytallins
Answer: A: Glycated crytallins 
Explanation: In diabetic cataract the mechanisms are belived to be glycation, carbamylation of crystallins and increased oxidative damage. IMG REF