For the myopic eye, the defect is cured by

Options

A. Convex lens
B. Concave lens
C. Cylindrical lens
D. Toric lens

Explanation

### Step-by-Step Solution:

1. **Understanding Myopia**: Myopia, also known as nearsightedness or short-sightedness, is a common vision condition where close objects can be seen clearly, but distant objects appear blurry. This occurs because the eye is either too long or the cornea has too much curvature, causing light rays to focus in front of the retina instead of directly on it.

2. **Identifying the Problem**: In a myopic eye, the image of distant objects is formed before it reaches the retina. This results in a blurred image for far-away objects. The retina is the light-sensitive layer at the back of the eye where images are focused.

3. **Using Lenses to Correct Myopia**: To correct myopia, we need to adjust the way light enters the eye so that it focuses correctly on the retina. This can be achieved by using lenses.

4. **Choosing the Right Lens**: The appropriate lens to correct myopia is a **concave lens**. Concave lenses are diverging lenses that spread out light rays that are coming into the eye.

5. **Effect of the Concave Lens**: When a concave lens is placed in front of a myopic eye, it diverges the incoming light rays. This divergence allows the light rays to extend their focal point further back, allowing the image to be focused directly on the retina.

6. **Conclusion**: Therefore, the defect of myopia is cured by using a concave lens, which helps to ensure that distant objects are seen clearly by focusing the image correctly on the retina.

### Final Answer:
For the myopic eye, the defect is cured by **concave lens**.

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