What is astigmatism?

Astigmatism is indeed a condition where objects appear blurry due to an irregular shape of the cornea or the lens of the eye. This irregular shape prevents light rays from focusing properly on the retina, causing distorted or blurred vision at any distance. The blurriness may affect both near and far vision, making it difficult for individuals with astigmatism to see clearly. Understanding this condition is essential for recognizing the need for corrective lenses or other treatments to improve visual clarity.

The other options refer to different aspects of vision. Sharpness in vision at all distances pertains to emmetropia, while an improvement in color vision is typically associated with certain conditions or treatments, rather than astigmatism. Focusing in front of the retina is associated with myopia (nearsightedness), which is distinctly different from astigmatism.