## Core Concept
The VISION 2020 goals focus on preventable causes of blindness and aim to eliminate avoidable blindness by the year 2020. The initiative primarily targets major causes of blindness and visual impairment that are treatable or preventable.

## Why the Correct Answer is Right
The VISION 2020 goals emphasize major public health problems related to avoidable blindness. These include cataract, refractive errors, low vision, glaucoma, diabetic retinopathy, and childhood blindness. Among the provided options, the one that does not fit within these major targeted conditions would be the correct answer.

## Why Each Wrong Option is Incorrect
- **Option A:** Cataract is a leading cause of blindness worldwide and is a major focus of VISION 2020.
- **Option B:** Refractive errors are another significant cause of visual impairment and blindness that VISION 2020 aims to address through correction.
- **Option D:** Diabetic retinopathy is a critical cause of blindness in working-aged adults and is targeted under VISION 2020.

## Clinical Pearl / High-Yield Fact
A key aspect of VISION 2020 is its comprehensive approach to tackling avoidable blindness, emphasizing both prevention and treatment. A memorable point is that VISION 2020 is a collaborative initiative between the World Health Organization (WHO) and the International Agency for the Prevention of Blindness (IAPB), highlighting the importance of global cooperation in achieving its goals.

## Correct Answer Line
**Correct Answer: C.**