How has the problem of blindness in poor countries been alleviated by work done by Prof. Ingo Potrykus?

Explanation

**Step-by-Step Solution:**

1. **Introduction to the Problem of Blindness:**
- In many poor countries, blindness is a significant health issue, often caused by a deficiency in vitamin A. This deficiency can lead to severe vision problems, including night blindness and even total blindness.

2. **Role of Professor Ingo Potrykus:**
- Professor Ingo Potrykus, along with his colleague Peter Bayer, developed a genetically modified rice known as "Golden Rice." This rice was specifically designed to combat vitamin A deficiency.

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