Astigmatism is an eye condition which causes blurry or distorted vision. Continue reading to learn more about what causes astigmatism, and how it is treated. What Causes Astigmatism? Astigmatism is a refractive error in the eye (similar to myopia--nearsightedness, and hyperopia--farsightedness.) Astigmatism is characterized by unequal curvatures in the lens or cornea. This irregular eye […]