Astigmatism is one of the most common refractive conditions—and for cataract patients, addressing it at the time of surgery is one of the most impactful steps toward clear, glasses-free vision.
What Is Astigmatism?
Astigmatism is a refractive error caused by an asymmetric curvature of the cornea or lens. Instead of being perfectly spherical, an astigmatic eye has more curvature in one meridian than another—similar to the shape of a football rather than a basketball—causing light to focus at multiple points rather than a single sharp point on the retina. The result is blurred or distorted vision at all distances. Astigmatism is extremely common and is present to some degree in the majority of eyes. When significant astigmatism is present at the time of cataract surgery, addressing it as part of the procedure can dramatically reduce or eliminate the need for glasses for distance vision following surgery.



