What is Astigmatism?
Our eye, typically, is shaped like a basketball; it is spherical, smooth, and equally shaped in all directions. However, the sphere changes to an oval or egg shape in people with astigmatism, leading to vision errors.
The cornea and lens have a smooth surface and are curved equally
in all directions, focusing light rays onto the retina located at the back of the eye. Any structural problems with the cornea or the lens will not allow proper refraction of the light rays and cause a refractive error.
Corneal astigmatism occurs when the cornea assumes a distorted shape, and if the lens is affected, it is known as lenticular astigmatism. No matter the type of astigmatism you suffer from, it will affect your vision for far and near objects. The vision is blurry and distorted in patients with astigmatism. It can be present along with other refractive errors like Myopia (Nearsightedness) or Hyperopia (Farsightedness). Astigmatism can affect adults as well as children.