## Core Concept
The National Programme for Control of Blindness (NPCB) & National Rural Health Mission (NRHM) aim to reduce the prevalence of blindness through various eye care interventions. The goal is aligned with global efforts to prevent and control avoidable blindness. The World Health Organization (WHO) and other international bodies have set targets to reduce avoidable blindness.

## Why the Correct Answer is Right
The correct goal for reducing the prevalence of blindness under the NPCB-NRHM by 2020 is **< 0.5%**. This target focuses on significantly decreasing the burden of blindness in India, making eye care services more accessible and improving the overall quality of life for individuals. Achieving this goal involves comprehensive eye care services, including cataract surgeries, management of refractive errors, and control of diseases causing blindness. ## Why Each Wrong Option is Incorrect - **Option A: < 1%**: While this is an ambitious goal, it is not the specific target set under the NPCB-NRHM for 2020. - **Option B: < 1.5%**: This option represents a higher prevalence than the target, indicating that it is not the correct goal. - **Option D: < 2%**: Similar to Option B, this represents an even higher prevalence and is not aligned with the NPCB-NRHM's goal. ## Clinical Pearl / High-Yield Fact A key fact to remember is that the NPCB-NRHM's goal of reducing blindness prevalence to **< 0.5%** by 2020 underscores the importance of universal access to eye care services, early detection of eye diseases, and timely management to prevent avoidable blindness. ## Correct Answer: C. < 0.5%.