Which of the following prevents internal reflection of light within the eye
or
Coloured (Pigmented) layer of eye is

Options

A. Choroid
B. Cornea
C. Sclera
D. Conjuctive

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which part of the eye prevents internal reflection of light and identifies the colored (pigmented) layer of the eye.

2. **Identifying the Options**: The options provided are:
- Choroid
- Cornea
- Sclera
- Conjunctiva

3. **Analyzing Each Option**:
- **Choroid**: This layer is located behind the retina and is rich in blood vessels. It contains a high concentration of melanin pigment, which helps absorb excess light and prevents internal reflection.
- **Cornea**: This is the transparent front part of the eye that helps focus light but does not have a pigmented layer.
- **Sclera**: This is the white outer layer of the eye, which provides structure but lacks pigmentation.
- **Conjunctiva**: This is a thin transparent membrane that covers the eyelids and the white part of the eyeball, and it does not contain melanin.

4. **Conclusion**: The choroid is the correct answer as it is the pigmented layer of the eye that prevents internal reflection of light due to its melanin content.

5. **Final Answer**: The colored (pigmented) layer of the eye that prevents internal reflection of light is the **Choroid**.

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