Question

Astigmatism can be removed by using _______lenses.

Answer 1

Astigmatism is a condition in which an eye cannot focus on both horizontal and vertical lines at the same time.

1. As a result, the horizontal part of an object will not be as visible as the vertical part.
2. When the corner of the eye has varying curvature in different directions, this occurs.
3. Glasses with a cylindrical lens can be used to rectify this.
4. Thus, astigmatism can be removed by using cylindrical lenses.