**Question:** The screening strategy for prevention of blindness from diabetic retinopathy according to the NPCB involves:

A. Screening all diabetics above the age of 12 years
B. Screening only diabetics above the age of 30 years
C. Screening only pregnant women
D. Screening only high-risk individuals

**Core Concept:** Diabetic retinopathy is a complication of diabetes mellitus that affects the blood vessels in the retina, potentially leading to vision loss and blindness. National Programme for Control of Blindness (NPCB) recommends an organized approach to prevent blindness due to diabetic retinopathy.

**Why the Correct Answer is Right:** A comprehensive strategy involves screening all diabetics above the age of 12 years (Option A). This is because diabetic retinopathy can develop at any stage of diabetes, and early detection allows for timely management and prevention of vision loss.

**Why Each Wrong Option is Incorrect:**

Option B is incorrect because the disease can affect younger individuals, and screening only those above 30 years does not capture the entire diabetic population.

Option C is incorrect as screening only pregnant women (who may or may not have diabetes) does not ensure comprehensive coverage of diabetics who may require screening.

Option D is incorrect because focusing on high-risk individuals alone (e.g., those with longer duration of diabetes or poor glycaemic control) does not cover the entire diabetic population, thereby missing potential cases and preventing early detection.

**Clinical Pearl:** Early detection and screening of diabetic retinopathy is crucial as it allows for timely intervention with laser photocoagulation, intraocular injections, or close monitoring of blood glucose levels to prevent vision loss and blindness.

**Correct Answer:**

**Correct Answer: A.** Screening all diabetics above the age of 12 years