Astigmatism is corrected with what kind of lens?

Astigmatism is a common refractive error caused by an irregular shape of the cornea or lens of the eye, which leads to distorted or blurred vision. To correct this condition, cylindrical lenses are utilized. These lenses are specifically designed to address the asymmetrical curvature of the eye. They help focus light more appropriately onto the retina by compensating for the differences in the eye's shape, allowing for clearer vision.

Cylindrical lenses have varying degrees of curvature in different meridians, which effectively correct the specific angles at which light enters the eye. This tailored approach creates a clearer image for the patient, making cylindrical lenses the preferred choice for treating astigmatism.