What you need to know about astigmatism

Astigmatism is a common visual issue caused by corneal defect refractive errors. In astigmatism, the cornea or lens, which is the anterior surface of the eye, has an irregular shape elliptical curvature, like a football. Astigmatism is one of the main types of refractive errors that many people experience. This refractive error can change the manner in which light gets …