Astigmatism is a common vision condition that affects the way light enters the eye, causing blurred or distorted vision. Unlike nearsightedness or farsightedness, which affect how the eye focuses on objects, astigmatism is caused by an irregularly shaped cornea or lens. Instead of being round like a basketball, the cornea or lens may have a more football-like shape, resulting in light being focused at multiple points rather than a single point on