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
Dislocation of lens is seen in: 
Select and explain. 
A. Trachoma, B. Diabetes mellitus, C. Homocystinuria, D. Turner's syndrome
C: Homocystinuria
Answer: C: Homocystinuria 
Explanation: C i.e. Homocystinuria