The screening strategy for prevention of blindness from diabetic retinopathy according to the NPCB involves-: (A) Oppounistic screening, (B) High risk screening, (C) Mass screening, (D) Screening by primary care physician
Answer is B. Ref: Parks 23rd edition pg 137 Screening will be most productive if applied selectively to high-risk groups, the groups defined on the basis of epidemiological research.