Visual purple' pigment of the eye is responsible for

Options

A. Color of eye
B. Color blindness
C. Photopic vision
D. Scotopic vision

Answer

**Step-by-Step Solution:**

1. **Understanding Visual Purple**: Visual purple, also known as rhodopsin, is a pigment found in the rods of the retina in the eye. It plays a crucial role in vision, particularly under low-light conditions.

2. **Function of Rhodopsin**: Rhodopsin is sensitive to light and helps in the process of phototransduction, which is the conversion of light into electrical signals that can be interpreted by the brain.

3. **Types of Vision**: There are two main types of vision based on lighting conditions:
- **Photopic Vision**: This is vision under well-lit conditions, where cones (another type of photoreceptor) are primarily responsible for color vision and visual acuity.
- **Scotopic Vision**: This is vision under low-light conditions, where rods are primarily responsible for detecting light and motion, but not color.

4. **Role of Rhodopsin in Scotopic Vision**: Rhodopsin is particularly important for scotopic vision because it allows us to see in dimly lit environments. It is sensitive to blue-green light, which is why it appears violet or purplish.

5. **Conclusion**: Therefore, the visual purple pigment (rhodopsin) is responsible for scotopic vision, which is the ability to see in low-light conditions.

**Final Answer**: The visual purple pigment of the eye is responsible for **scotopic vision**.

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