A person wears eye glasses with a power of `-5.5 D` for distance viewing. His doctor prescribes a correction of `+ 1.5 D` for his near vision. What is the focal length of the lens used for correcting (i) distant vision and (ii) near vision?

Explanation

To solve the problem, we need to find the focal lengths of the lenses used for correcting distant vision and near vision for a person who wears eyeglasses with a power of `-5.5 D` for distance viewing and is prescribed a correction of `+1.5 D` for near vision.

### Step-by-Step Solution:

**(i) Focal Length for Distant Vision:**

1. **Identify the Power of the Lens for Distant Vision:**
The power of the lens for distant vision is given as:
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