Which lens is used for the correction of myopia and why ?

Explanation

### Step-by-Step Solution:

1. **Understanding Myopia**: Myopia, also known as nearsightedness, is a condition where distant objects appear blurry while close objects can be seen clearly. This occurs because the eye's lens focuses light rays in front of the retina instead of directly on it.

2. **Normal Eye Function**: In a normal eye, parallel rays of light from distant objects are focused directly on the retina. This allows for a clear image to be formed.

3. **Image Formation in Myopia**: In a myopic eye, the light rays converge before they reach the retina, causing the image to be formed at a point in front of the retina. This results in a blurred image for distant objects.

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