In human beings the total visual field and the stereoscopic visual
field respectively is

Options

A. `140^(@)` and `52^(@)`
B. `140^(@)` and `26^(@)`
C. `180^(@)` and `140^(@)`
D. `180^(@)` and `26^(@)`

Answer

To solve the question regarding the total visual field and the stereoscopic visual field in human beings, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Total Visual Field**: This is the entire area that can be seen when the eyes are focused on a central point, including peripheral vision.
- **Stereoscopic Visual Field**: This refers to the area where an object can be seen with both eyes simultaneously, allowing for depth perception.

2. **Determine the Total Visual Field**:
- In humans, the total visual field is known to be **180 degrees**. This means that when looking straight ahead, we can see objects up to 90 degrees to the left and 90 degrees to the right.

3. **Determine the Stereoscopic Visual Field**:
- The stereoscopic visual field in humans is approximately **140 degrees**. This area is narrower than the total visual field because it is limited to the overlap of vision from both eyes, which is essential for depth perception.

4. **Match with Options**:
- Now, we can compare these values with the provided options:
- 140° and 52°
- 140° and 26°
- 180° and 140° (This matches our findings)
- 180° and 26°

5. **Conclusion**:
- The correct answer is **180° for the total visual field and 140° for the stereoscopic visual field**.

### Final Answer:
The total visual field in humans is **180 degrees**, and the stereoscopic visual field is **140 degrees**.

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