Question

When we look at something close, we focus our eyes as a circle. But what if someone has astigmatism and focuses on something close, is it possible for the eyes to focus only the axis that needs focusing, thereby getting clear vision without astigmatism?

Answer 1

Astigmatism is an unevenness or asymmetry in the focus of the eye caused by irregularities in the shape of the cornea, lens, or retina. It can be partially corrected with a spectacle that has the opposite irregularity of the eye.

Step-by-step explanation:

Astigmatism is an unevenness or asymmetry in the focus of the eye. This can result in the image appearing elongated. Astigmatism is mostly due to irregularities in the shape of the cornea, lens, or retina, causing different parts of the lens system to produce images at different locations. The eye-brain system can compensate for some of these irregularities, but they generally manifest themselves as less distinct vision or sharper images along certain axes.

Astigmatism can be partially corrected with a spectacle that has the opposite irregularity of the eye. If an eyeglass prescription has a cylindrical correction, it is there to correct astigmatism. The normal corrections for short or farsightedness are spherical corrections, which are uniform along all axes.