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
Screening of retina in Non - insulin dependent diabetes mellitus starts after 
Select and explain. 
A. Start after 5 years, B. Start after 6 years, C. Start immediately, D. Start after 3 months
C: Start immediately
Answer: C: Start immediately 
Explanation: NIDDM - start immediately.
IDDM - start within 5 years.