A person is suffering from both myopia and hypermetropia
What kind of lenses can correct this defect?

Explanation

To solve the question regarding the correction of myopia and hypermetropia, let's break it down step by step:

### Step 1: Understand Myopia and Hypermetropia
- **Myopia (Nearsightedness)**: This condition occurs when a person can see nearby objects clearly, but distant objects appear blurry. This is usually due to the eyeball being too long or the cornea having too much curvature.
- **Hypermetropia (Farsightedness)**: In contrast, hypermetropia is when a person can see distant objects clearly, but nearby objects are blurry. This condition often arises when the eyeball is too short or the cornea is too flat.

### Step 2: Identify the Lenses Used for Correction
- **Correction for Myopia**: To correct myopia, a **concave lens** (also known as a diverging lens) is used. This lens helps to diverge light rays before they enter the eye, allowing the person to see distant objects more clearly.
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