Too short eye ball and too flat lens produce

Options

A. Astigmatism
B. Presbyopia
C. Near sightedness
D. Far sightedness.

Answer

To solve the question "Too short eyeball and too flat lens produce," we will analyze the conditions related to the shape of the eyeball and the lens.

### Step-by-Step Solution:

1. **Understanding the Eye Structure**:
- The human eye consists of a lens and an eyeball. The lens helps to focus light onto the retina, which is crucial for clear vision.

2. **Identifying the Problem**:
- The question states that there is a "too short eyeball" and a "too flat lens." This implies that the eyeball does not have enough length, and the lens is not curved enough to focus light properly.

3. **Effect of Short Eyeball and Flat Lens**:
- When the eyeball is too short, light rays entering the eye are not focused directly on the retina. Instead, they focus behind the retina. This is because the distance from the lens to the retina is shorter than the focal point of the light rays.

4. **Identifying the Condition**:
- The condition where light rays focus behind the retina is known as **Hypermetropia** or **Farsightedness**. In this condition, individuals can see distant objects clearly but struggle to see nearby objects.

5. **Conclusion**:
- Therefore, the answer to the question is that a too short eyeball and too flat lens produce **Farsightedness** (Hypermetropia).

### Final Answer:
The correct answer is **Farsightedness (Hypermetropia)**.

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