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
Diabetic retinopathy, most likely present with – 
Select and explain. 
A. IDDM with 2 years duration, B. NIDDM with 2 years duration, C. Juvenile diabetes, D. Gestational diabetes
B: NIDDM with 2 years duration
Answer: B: NIDDM with 2 years duration 
Explanation: "Vision - threatening retinopathy is rare in type 1 diabetic patients in the first 3-5 years of diabetes or before puberty. During the next two decades, nearly all type 1 diabetic patients develop retinopathy. Up to 21% of patients with type 2 DM have retinopathy at the time of first diagnosis of diabetes and most develop some degree of retinopathy over time".    — Diabetic retinopathy : the Essentials